SOLID LASER RODS

Mounting vane for optical element of a laser

HIGH SPEED GASENTLADUNGSLASER WITH A HELIUM-RINSED LINE WIDTH-NARROWING MODULE

Very narrow band, two chamber, high rep rate gas discharge laser system

HIGH POWER SOURCE OF ELECTROMAGNETIC RADIATION

A high power source of electro-magnetic radiation having a multi-purpose housing is disclosed. The multi-purpose housing includes an interior filled with a material forming at least a light source and further comprising a reflector which can envelope a laser rod surrounded by light sources for providing light excitation to the laser rod. A material defining outer surfaces of the light sources extends out to and defines outer surfaces of the reflector. A high-reflectivity coating is disposed over an outer surface of the reflector, as is a protective coating. Also disposed over an outer surface of the reflector can he an optional heat sink, with cooling being performed by an optional arrangement of forced-air traveling over the heat sink. The light sources may be light source pumps, and the high-reflectivity coating may be formed to envelop the reflector.

METHOD AND SYSTEM FOR COMPACT EFFICIENT LASER ARCHITECTURE

A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.

EXCITATION UNIT FOR A FIBRE LASER

The invention relates to an excitation unit (2) for a fiber laser, said excitation unit having an excitation fiber (3) and a longitudinal axis (6) and forming a two-dimensional or three-dimensional structure in a resonator region of the fiber laser. When viewed in cross-section, the excitation fiber (3) consists of an active fiber core (3a), a pump cladding (3b) that surrounds the active core (3a), a quartz glass casing (3) that surrounds the pump cladding (3b), and at least one cover (3e). The resonator region is equipped with a base plate (5) on which a plurality of excitation housings (18) are formed, each excitation housing delimiting a gas-tight excitation chamber (22). The excitation fiber runs through each excitation chamber at least once and is held in holding units (8) laterally to each excitation chamber when viewed in the longitudinal direction (6) of the excitation fiber. The cover of the excitation fiber is removed in some regions in the excitation chambers and is completely ...

HIGH-POWER LIQUID-COOLED PUMP AND SIGNAL COMBINER

Embodiments of the present invention are generally related to a high-power liquid-cooled pump and signal combiner and methods thereof for fiber optic applications. More specifically, embodiments of the present invention relate to a pump and signal combiner capable of conveying several kilowatts of pump laser power for kilowatt class rare-earth doped fiber amplifiers without suffering thermal damage. In one embodiment of the present invention, a high-power, heat dissipating optical fiber device comprises a section of optical fiber configured to propagate light, a cooling chamber, substantially encapsulating the optical fiber, and a fluid within the cooling chamber having a refractive index selected to control the interaction and propagation of the light in the fluid.

HIGH-ENERGY SOLID LASER.

TRANSMITTER OR OPTICAL AMPLIFIER (LASER)

Conductive cooled slab laser

TRANSMITTER OR OPTICAL AMPLIFIER (LASING)

Optical elements with protective undercoating

An apparatus and method are disclosed for an optical element which may comprise a main optical body comprising a crystal containing halogen atoms; a reflectivity coating for changing the reflectivity of a surface of the main body; and, an intermediate protective layer comprising a material containing free halogen atoms. The crystal may comprise an alkaline earth metal and may comprise fluorine atoms, e.g., calcium fluoride or magnesium fluoride. The intermediate protective layer may comprises a material containing free fluorine atoms, e.g., a material doped with fluorine atoms, e.g., doped silica. The intermediate layer comprises an amorphous portion and a polycrystalline portion. The optical element may also comprise a main optical element body; a reflectivity coating comprising a metal halide on an exterior the a surface of the main optical body; and a thin layer of protective outer coating on the reflectivity coating comprising a dense non-porous material thin enough to be transparent ...

TRANSVERSE PUMPED LASER AMPLIFIER ARCHITECTURE

An optical gain architecture includes a pump source and a pump aperture. The architecture also includes a gain region including a gain element operable to amplify light at a laser wavelength. The gain region is characterized by a first side intersecting an optical path, a second side opposing the first side, a third side adjacent the first and second sides, and a fourth side opposing the third side. The architecture further includes a dichroic section disposed between the pump aperture and the first side of the gain region. The dichroic section is characterized by low reflectance at a pump wavelength and high reflectance at the laser wavelength. The architecture additionally includes a first cladding section proximate to the third side of the gain region and a second cladding section proximate to the fourth side of the gain region.

LASER THERMAL MANAGEMENT SYSTEMS AND METHODS

A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reservoir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the cooled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

FIBRE BUNDLE COUPLED CIRCULAR SLAB LASER SYSTEM

A rod/slab/fibre bundle hybrid laser oscillator system in which annular rod (1) is coupled to a phase locked fibre bundle (6) via a microlens array (4) the laser resonator being defined by the rear mirror (2) which is 100 % reflecting at the laser wavelength and fully transmitting at the pump wavelength and the mirrored fibre bundle end (7). The laser medium (1) can be excited with lamps (9) and water cooled with fluid (11). Output beam (8) can be scaled by coupling a multiple of the inventions together via output fibres (6).

Gas discharge laser light source beam delivery unit

A beam delivery unit and method of delivering a laser beam from a lasr light source for excimer or molecular fluorine gas discharge laser systems in the DUV and smaller wavelengths is disclosed, which may comprise: a beam delivery enclosure defining an output laser light pulse beam delivery path from an output of a gas discharge laser to an input of a working apparatus employing the light contained in the output laser light pulse beam; a purge mechanism operatively connected to the beam delivery enclosure; an in-situ beam parameter monitor and adjustment mechanism within the enclosure, comprising a retractable beam redirecting optic; a beam analysis mechanism external to the enclosure; and, a retraction mechanism within the enclosure and operable from outside the enclosure and operative to move the retractable beam redirecting optic from a retracted position out of the beam path to an operative position in the beam path. The BDU may also include a beam attenuator unit contained within the enclosure adjustably mounted within the enclosure for positioning within the beam delivery path. The BDU may have at least two enclosure isolation mechanisms comprising a first enclosure isolation mechanism on a first side of the enclosure from the at least one optic module and a second enclosure isolation mechanism on a second side of the enclosure from the at least one optic module, each respective enclosure isolation mechanism comprising a flapper valve having a metal to metal seating mechanism and a locking pin assembly. A precision offset ratchet driver operative to manipulate actuator mechanisms in difficult to reach locations may be provided. An external kinematic alignment tool may be provided. A method of contamination control for a BDU is disclosed comprising selection of allowable materials and fabrication processes.

Heated solid state laser

An air cooled, flash lamp pumped, solid state laser device wherein heating devices are disposed on the laser rod at both ends to heat and temperature stabilize the laser rod. The solid state, laser rod is longer than the arc length of the flash lamp. The ends of the laser rod can be heated directly by winding heating wire, such as Nichrome, around each end or by applying heat through thermal conductive supports. A feedback loop is provided to maintain temperature of the solid state laser rod, which is preferably Alexandrite, within a desired range of 80° C. to 120° C.

LASER OSCILLATOR INCLUDING FANS WHICH COOL RESONATOR UNIT

A laser oscillator according to this invention includes a resonator unit, heat exchangers, fans, a resonator temperature measuring unit, and a fan control unit. The resonator unit resonates a laser beam to be output. The heat exchangers are arranged adjacent to the resonator unit and are to be supplied with a cooling liquid. The fans are arranged at least at one of two opposite positions across both the resonator unit and the heat exchangers and generate airflow in one direction, which passes through both the resonator unit and the heat exchangers. The resonator temperature measuring unit measures the temperature of the resonator unit. The fan control unit controls the fans. The fan control unit switches the direction in which air is blown by the fans, based on the temperature of the resonator unit. 1. A laser oscillator comprising:a resonator unit configured to resonate a laser beam to be output;a heat exchanger which is arranged adjacent to the resonator unit and is to be supplied with a cooling liquid;a fan which is arranged at least at one of two opposite positions across both the resonator unit and the heat exchanger and generates airflow in one direction, which passes through both the resonator unit and the heat exchanger;a resonator temperature measuring unit which measures a temperature of the resonator unit; anda fan control unit which controls the fan,wherein the fan control unit switches a direction in which air is blown by the fan, based on the temperature of the resonator unit measured by the resonator temperature measuring unit.2. The laser oscillator according to claim 1 , whereinwhen the measured temperature of the resonator unit is lower than a predetermined temperature, the fan control unit adjusts the direction in which the air is blown by the fan to a direction from the heat exchanger to the resonator unit, andwhen the measured temperature of the resonator unit is not lower than the predetermined temperature, the fan control unit adjusts the ...

Conductively-cooled slab laser

A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing. The laser-housing is formed from a hollow extrusion. An interior surface of the extrusion provides a ground electrode of the laser. Another live electrode is located within the extrusion, electrically insulated from and parallel to the ground electrode, forming a discharge-gap of the slab-laser. The electrodes are spaced apart by parallel ceramic strips. Neither the extrusion, nor the live electrode, include fluid coolant channels. The laser-housing is cooled by fluid-cooled plates attached to the outside thereof.

Gas cooled laser device for highly compact laser beam sources

Bei einem luftgekühlten Lasergerät (1) mit dissipativen optischen und dissipativen nicht-optischen Komponenten (3, 6) und mit Gehäusewänden (9, 10) aus wärmeleitendem Material, insbesondere aus Metall, von denen eine oder mehrere mit Lüftungskanälen (15) versehen sind, sind erfindungsgemäß mindestens eine dissipative Komponente, bevorzugt mindestens eine dissipative optische Komponente (3) und mindestens eine dissipative nicht-optische Komponenten (6), besonders bevorzugt alle dissipativen Komponenten (3, 6), an einer Platte (8) aus wärmeleitendem Material, insbesondere aus Metall, montiert, die mit der mindestens einen mit Lüftungskanälen (15) versehenen Gehäusewand (9, 10) thermisch leitend verbunden ist.

Ultra-narrow-band two-chamber high repetition rate discharge gas laser system

ПОРТАТИВНОЕ ЛАЗЕРНОЕ УСТРОЙСТВО

FIELD: portable laser units including manual ones with directly cooled laser rod assembly. SUBSTANCE: laser unit 10 has casing forming hollow space accommodating lasing emitter and low-pressure region formed in inner space to facilitate generation of gas coolant flow therein. Lasing emitter has pump lamp and laser rod. Source generating gas coolant flow is maintained within inner space. Cooling system has casing, emitter, and jacket. It functions to force coolant about external surface of laser rod when jacket is rotating about rod. The latter may have conical configuration or may be made in the form of polygonal truncated pyramid. EFFECT: reduced number of coolant flow stagnation regions, enhanced efficiency of heat transfer between laser rod and coolant, augmented cooling of laser working zone and intake of human tissue particles. 56 cl, 9 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 315 403 (13) C2 (51) ÌÏÊ H01S 3/04 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004105255/28, 25.07.2002 (72) Àâòîð(û): ÃÐÓÇÄÅ Âàëåíòèí À. (RU), ÅÔÐÅÌÊÈÍ Ïàâåë Â. (US) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 25.07.2002 (73) Ïàòåíòîîáëàäàòåëü(è): ÈÍÍÎÒÅÕ ÑØÀ ÈÍÊ. (US) R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 25.07.2001 US 60/307,628 (43) Äàòà ïóáëèêàöèè çà âêè: 27.02.2005 (45) Îïóáëèêîâàíî: 20.01.2008 Áþë. ¹ 2 2 3 1 5 4 0 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 5074861 A, 24.12.1991. US 3369192 A, 13.02.1968. FR 2756110, 22.05.1998. RU 94036577 A1, 27.09.1996. RU 2019015 C1, 30.08.1994. US 5481556, 02.01.1996. US 5401171 A, 28.03.1995. 2 3 1 5 4 0 3 R U (86) Çà âêà PCT: US 02/23654 (25.07.2002) C 2 C 2 (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 25.02.2004 (87) Ïóáëèêàöè PCT: WO 03/010863 (06.02.2003) Àäðåñ äë ïåðåïèñêè: 107078, Ìîñêâà, Êðàñíîâîðîòñêèé ïð-ä, 3, ñòð.1, ê.311, ÎÎÎ Ïàòåíòíî-ïðàâîâà ôèðìà "Èñêîíà-II", ïàò.ïîâ. Å.À.Ãàâðèëîâîé, ðåã.¹ 50 (54) ...

GAS FLOW COOLED LASER

A gas flow laser has laser resonator tubes 2, 3, a collector 4 directly connected to a precooler 9 and this directly connected to a radial compressor 10, both outlets 11, 12 of radial compressor 10 being connected via gas deflecting parts 13, 14 to coolers 15, 16 which are directly connected to lens mounts 5 (6) (Fig 2), the axes of the coolers 9, 15, 16 being mutually parallel and perpendicular to the laser resonator. The gas guiding parts (except tubes 2, 3) are preferably rectangular cross-section; transitions to the tubes 2, 3 are detailed (Fig 3), flanges (25) in the lens mount system and the ends of tubes 2, 3 being shaped to reduce gas flow resistance (Fig. 4). Additional excitation paths may be included (Fig. 5). ...

LASERS

... 1505433 Lasers SIEMENS AG 21 June 1976 [21 July 1975] 25619/76 Heading H1C In a pulse laser in which a pumping lamp 13 and a laser active rod 14, e.g. Nd-YAG, are located at respective foci of a two-part reflector assembly 9, 10 having an elliptical cross-section and transparent walls, the reflector assembly is partitioned by a heat impermeable filter 12 and has a frequency selective reflecting coating 11 on its walls which together separate the useful pumping radiation frequencies from the unwanted, the latter being expelled from the reflector assembly for absorption by the light absorbing internal walls 4 of a housing 2. Fan-pumped air is passed through end plate ducts, Fig. 2 (not shown), for cooling the lamp and rod, and further heat dissipation is provided by a heat sink 6, 7. Radiation absorption by the housing walls is enhanced by providing annular grooves (not shown) or a two component matt black lacquer on a roughened surface.

PORTABLE LASER MECHANISM

GAS-COOLED LASER APPARATUS FOR HIGH-COMPACT SOURCES OF LASER BEAM

LASERZÜNDKERZE

Laserzündkerze (1), umfassend eine Pumplichtquelle (12) und einen longitudinal gepumpten Laserresonator (6), welche jeweils im Gehäuse (2) der Laserzündkerze (1) angeordnet sind, gekennzeichnet durch einen Kühllufteinlass (30), einen Kühlluftauslass (32) und einen den Kühllufteinlass (30) mit dem Kühlluftauslass (32) verbindenden Kühlbereich (24), wobei der Kühlbereich (24) die Pumplichtquelle (12) zumindest bereichsweise umgibt. Laser spark plug (1) comprising a pumping light source (12) and a longitudinally pumped laser resonator (6) respectively arranged in the housing (2) of the laser spark plug (1), characterized by a cooling air inlet (30), a cooling air outlet (32) and a the cooling air inlet (30) with the cooling air outlet (32) connecting the cooling region (24), wherein the cooling region (24) surrounds the pumping light source (12) at least partially.

TRIGGERING AND COOLING LASER FLASHLAMPS APPARATUS

LASER LITHOGRAPHY LIGHT SOURCE WITH BEAM DELIVERY

The present invention provides a modular high repetition rate ultraviolet gas discharge laser (4) light source for a production line machine. The system includes an enclosed and purged beam path for delivery the laser beam to a desired location such as the entrance port of the production line machine. In preferred embodiments, the production line machine is a lithography machine (2) and two separate discharge chambers are provided, one of which is a part of a master oscillator producing a very narrow band send beam which is amplified in the second discharge chamber. The MOPA system is capable of output pulse energies approximately double the comparable single chamber laser system with greatly improved beam quality. A pulse stretcher more than doubles the output pulse length resulting in a reduction in pulse power (mJ/ns) as compared to prior art laser systems. This preferred embodiment is capable throughout the operating life of the lithography system, despite substantially degradation ...

SOLID STATE LASER HAVING CLOSED CYCLE GAS COOLED CONSTRUCTION

A solid state laser comprises a housing (10) having a body portion for enclosing optical components (15) thereof. A mounting means (17) is provided for mounting the optical components (15) directly to the housing (10). The housing (10) has stiffness sufficient for spatial and angular positioning of the optical components (15). A cooling means (19) transfers heat from the optical components (15) to the housing (10) by circulation of a preselected gas therewithin.

ILLUMINATION STRUCTURE OF A LASER ROD, HAS OPTICAL SOURCES DEFOCUSED IMAGES

DEVICE FOR the THERMAL MANAGEMENT Of an OPTICAL AND PROCEEDED ELEMENT OF THERMAL MANAGEMENT ASSOCIATES.

La présente invention concerne un dispositif (1) pour la gestion thermique d'un élément optique (2), comprenant : - l'élément optique (2) ; - un matériau (5) à une température de référence ; et - une couche intermédiaire gazeuse (4) située directement entre le matériau (5) à une température de référence et l'élément optique (2), ladite couche intermédiaire gazeuse (4) se trouvant sur au moins une partie de son épaisseur dans le régime de diffusion dit « transitoire » défini par une épaisseur de la couche intermédiaire gazeuse (4) telle que le rapport du libre parcours moyen des molécules de gaz dans la couche intermédiaire gazeuse (4) sur ladite épaisseur soit compris entre 0,1 et 10. L'invention concerne aussi un procédé de gestion thermique mis en œuvre dans ce dispositif (1), pour gérer la température d'un élément optique (2). The present invention relates to a device (1) for the thermal management of an optical element (2), comprising: - the optical element (2); a material (5) at a reference temperature; and a gaseous intermediate layer (4) situated directly between the material (5) at a reference temperature and the optical element (2), said gaseous intermediate layer (4) being on at least a part of its thickness in the so-called "transient" diffusion regime defined by a thickness of the gas intermediate layer (4) such that the ratio of the average free path of the gas molecules in the gaseous intermediate layer (4) to said thickness is between 0.1 and 10 The invention also relates to a thermal management method implemented in this device (1) for managing the temperature of an optical element (2).

Solid laser of great energy

L'invention concerne un laser solide de grande énergie utilisant un nouveau dispositif de pompage optique, comprenant des fibres optiques connectées d'une part à des sources optiques de forte puissance, d'autre part couplées au milieu actif. Dans ce dispositif la surface de couplage est déplacée grâce à des moyens mécaniques permettant le déplacement des fibres optiques et l'évacuation de chaleur liée à un pompage de forte puissance étant ainsi favorisée, permet d'utiliser un tel laser comme arme laser. The invention relates to a high-energy solid-state laser using a novel optical pumping device, comprising optical fibers connected on the one hand to high-power optical sources and on the other hand coupled to the active medium. In this device, the coupling surface is moved by mechanical means allowing the movement of the optical fibers and the removal of heat associated with high power pumping being thus favored, makes it possible to use such a laser as a laser weapon.

DEVICE FOR the THERMAL MANAGEMENT Of an OPTICAL AND PROCEEDED ELEMENT OF THERMAL MANAGEMENT ASSOCIATES.

LASER ALIGNMENT SYSTEM AND METHOD

Provided is a device/method of alignment of a laser's beam (140) with the laser's support system (100) so that the beam is substantially parallel in a chosen direction with respect to a reference line (B) on the laser's support system.

LASER OSCILLATOR AND POWER SUPPLY DEVICE FOR LASER OSCILLATOR

A power supply device for a laser oscillator, provided with: a high-frequency power generator for generating the electrical power/frequency required for laser oscillation; bus bars (5A, 5B), which are connected between the high-frequency power generator and a resonator, the electrical power/frequency being applied to the bus bars (5A, 5B); a cooling fan (6) for cooling the bus bars (5A, 5B); a detection conductor (7) disposed so as to be in non-contact with, and electrically disconnected from, the bus bars (5A, 5B), caused to heat by induction heating due to an inductive electromagnetic field generated by the electrical power/frequency applied to the bus bars (5A, 5B), and cooled by the cooling fan (6); and a temperature sensor (8) for sensing the temperature of the detection conductor (7).

EXCHANGEABLE LASER AND ARRAY THEREOF

Disclosed is an exchangeable laser and an array thereof. The exchangeable laser includes a cartridge receiver having a uniform shape and a uniform electrical interface, and including laser elements inside thereof, and a housing for clamping a cartridge receiver. The power supply and parameter controls of the laser element are realized by cylindrical protrusions with a certain degree of inclination on clip-lock panel and electronic interfaces within cylindrical slots of the cartridge receiver, and the cylindrical protrusions and cylindrical slots with the certain degree of inclination can realize precise positioning of the cartridge receiver and the housing. In the exchangeable laser array of the disclosure, the cartridge receiver inside each housing can be replaced by other cartridge receiver that emits laser with a different wavelength, and the plurality of housings can be connected with a plurality of wavelength switchers in the back to realize selective output of the wavelength.

High power gas discharge laser with helium purged line narrowing unit

A helium purge for a grating based line narrowing device for minimizing thermal distortions in line narrowed lasers producing high energy laser beams at high repetition rates. Applicants have shown substantial improvement in performance with the uses of helium purge as compared to prior art nitrogen purges.In preferred embodiments a stream of helium gas is directed across the face of the grating. In other embodiments the purge gas pressure is reduced to reduce the optical effects of the hot gas layer.

Portable laser device

A hand-held laser device (310) with a hollow interior space and including a laser emitter (311) formed by an exciting lamp (320) and a laser rod (318) spaced from each other. There is also a low pressure zone (325) formed within the interior space to facilitate formation of a stream of gaseous coolant.

ТВЕРДОТЕЛЬНЫЙ ЛАЗЕР ДИСКОВИДНОЙ ФОРМЫ

... 1. Твердотельный лазер в виде тонкого диска, содержащий:a) группу стопок пластин полупроводникового лазера,b) формирователь пучка,c) коллиматор пучка накачки,d) лазерный кристалл в виде тонкого диска,e) первый и второй параболические отражатели с одной и той же функцией лицевого контура,f) корректирующий отражатель,g) выходное зеркало, иh) ударно-струйную систему охлаждения для охлаждения лазерного кристалла в виде тонкого диска,при этомлазерный кристалл в виде тонкого диска и выходное зеркало образуют лазерный резонатор,первый и второй параболические отражатели располагаются на одной и той же сопряженной оси, и вершина одного из отражателей совмещена с фокусом другого,лазерный кристалл в виде тонкого диска приварен, приклеен или прикреплен к вершине первого параболического отражателя,лазерный кристалл в виде тонкого диска перпендикулярен к оптической оси первого параболического отражателя,корректирующий отражатель закреплен на вершине второго параболического отражателя,угол α между корректирующим ...

ИСТОЧНИК ЭЛЕКТРОМАГНИТНОГО ИЗЛУЧЕНИЯ С ВЫСОКИМ УРОВНЕМ МОЩНОСТИ

1. Устройство, содержащее:- усиливающую среду или отражатель, имеющий твердую или гелеобразную внутреннюю часть с удельной теплопроводностью, которая приблизительно в 1,5 или более раз превышает удельную теплопроводность воздуха; и- один или более стимулирующих источников или источников излучения, выполненных с возможностью испускать энергию в направлении усиливающей среды или для преломления посредством отражателя, причем каждый из стимулирующих источников или источников излучения содержит материал, (a) который формирует внутреннюю стенку просвета стимулирующего источника и который также проходит до и формирует стенку внешней поверхности камеры или (b) который формирует боковую стенку полости источника излучения, который проходит через и формирует внутреннюю часть и который проходит до и формирует внешнюю боковую стенку отражателя.2. Устройство по п.1, при этом устройство является моноблочным устройством для проведения терапевтических процедур, а энергия является возбуждающей энергией.3. Устройство по п.1, при этом устройство является источником электромагнитного излучения с высоким уровнем мощности.4. Устройство, которое содержит:(a) внутреннюю часть, заполненную материалом или содержащую твердый материал, ограничивающий один или более просветов, выступающих в качестве стимулирующих источников;(b) одну или более из (a) полости, расположенной в твердом материале рядом с просветами, чтобы принимать усиливающую среду, посредством которой материал является практически прозрачным к длинам волн усиливающей среды, и (b) полостей материала, содержащих источники излучения, имеющие боковые стенки, сформированн� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2013 116 994 A (51) МПК G02B 27/09 (2006.01) H01S 3/09 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013116994/28, 15.09.2011 (71) Заявитель(и): БАЙОЛЕЙЗ, ИНК. (US) Приоритет(ы): (30) Конвенционный приоритет: 15.09.2010 US 61/383,227 (85) Дата начала рассмотрения ...

СПОСОБ И СИСТЕМА ДЛЯ КРИОГЕННО-ОХЛАЖДАЕМОГО ЛАЗЕРНОГО УСИЛИТЕЛЯ

... 1. Система лазерного усилителя, содержащая:активную среду, которая характеризуется первой температурой во время работы, и покрытие, которое характеризуется второй температурой, превышающей первую температуру во время работы.2. Система лазерного усилителя по п. 1, в которой вторая температура является, по существу, комнатной температурой.3. Система лазерного усилителя по п. 1, в которой активная среда имеет продольную ось и множество сторон, по существу, параллельных продольной оси.4. Система лазерного усилителя по п. 1, в которой активная среда содержит прямоугольную пластину, имеющую ширину и длину в перпендикулярном продольной оси направлении, которые больше, чем толщина, измеряемая вдоль продольной оси.5. Система лазерного усилителя по п. 1, в которой активная среда содержит по меньшей мере одно из Yb:YAG или Yb:CaF.6. Система лазерного усилителя по п. 1, дополнительно содержащая:волновод, имеющий:множество внутренних поверхностей, каждая из которых оптически связана с одной из множества ...

УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ ИЗЛУЧЕНИЯ ВЫСОКОЙ МОЩНОСТИ

Устройство для передачи излучения высокой мощности содержит заполненную теплоносителем камеру, ограниченную с торца прозрачной плоскопараллельной пластиной, жгут с полированным торцом из волоконных световодов, концевой участок которого установлен внутри камеры с помощью двух фиксирующих элементов. Камера разделена на две области, на стенках камеры установлены штуцеры для подачи и откачки теплоносителя в каждой из областей. Фиксирующие элементы выполнены в виде двух пластин. Первая фиксирующая пластина имеет отверстия для удержания световодов и расположена у стенки входа жгута в камеру, вторая фиксирующая пластина имеет отверстия для удержания концевых участков световодов на приторцевой части и расположена у стенки с плоскопараллельной пластиной. Первая область камеры герметично отделена от второй и имеет контур охлаждения. Первая область предназначена для газообразного теплоносителя, а вторая - для жидкостного теплоносителя. Технический результат - повышение надежности работы за счет исключения ...

LASERVORRICHTUNG MIT WÄRMEÜBERTRAGUNGSVORRICHTUNG ZUR ABGABE VON WÄRME IM INNEREN EINES GEHÄUSES NACH AUSSEN

Eine Laservorrichtung umfasst Kühlrippen, deren Temperatur niedriger als jene eines Wärmeabstrahlungsmantels ist, und eine Wärmeübertragungsvorrichtung, die einen Kühlventilator aufweist. Eine Steuervorrichtung nimmt dann, wenn eine durch einen Temperatursensor detektierte Temperatur niedriger als ein Temperaturreferenzwert ist sowie eine durch einen Feuchtigkeitssensor detektierte Feuchtigkeit höher als ein Feuchtigkeitsreferenzwert ist, eine derartige Steuerung vor, dass der Kühlventilator angehalten wird. Die Steuervorrichtung nimmt dann, wenn die durch den Temperatursensor detektierte Temperatur höher als der Temperaturreferenzwert ist sowie die durch den Feuchtigkeitssensor detektierte Feuchtigkeit niedriger als der Feuchtigkeitsreferenzwert ist, eine derartige Steuerung vor, dass der Kühlventilator angetrieben wird.

Mount for optical element of a laser

OPTICAL TRANSMITTER OR AMPLIFIER (LASER)

OPTICAL TRANSMITTER OR AMPLIFIER (LASER)

OPTISCHER SENDER ODER VERSTAERKER (LASER)

Extreme repetition rate gas discharge laser

Laser spectral engineering for lithographic process

ANTI-TRANSVERSE LASING DEVICE WITH LONGITUDINAL COOLING FOR EMITTING A LASER BEAM

The invention relates to a device for emitting a laser beam, which comprises a cylindrical solid amplifier medium (1), having a fluorescence wavelength .lambda., delimited by a surface .SIGMA. connecting two faces S1 and S2 and intended to be pumped through both the faces, or one of them, in order to become a gain medium. It comprises a cooling fluid (31) of thermal conductivity Cr in contact with the amplifier medium (1) over one of the faces, and an index matching liquid (21) that absorbs or scatters the fluorescence wavelength, of thermal conductivity Ci < 0.3 Cr, in contact with the amplifier medium (1) over its surface .SIGMA..

SOLID LASER DEVICE

A solid laser device comprises a cylindrical beam collector in which a solid laser medium and a beam source for excitation of the laser medium are held. A wavelength selective reflection film for reflecting beams with wavelengths effective for excitation of the laser medium and transmitting beams with other wavelengths is disposed on at least one of outer and inner surfaces of the beam collector. A beam shield is disposed outside of the beam collector and reflection film to absorb and cool the beams transmitted outside of the beam collector and reflection film. A wavelength conversion filter may be disposed outside of the laser medium in the beam collector to convert beams with wavelengths harmful to the excitation into beams with wavelengths effective for the excitation. Thus, thermal load on the laser medium and the excitation beam source itself can be decreased; as a consequence, high output of the solid laser device can be attained; single transverse mode can be attained; and long lifetime ...

MULTI-ELEMENT MONOLITHIC SOLID STATE LASER

A monolithic solid state laser structure is used to construct erbium lasers that are insensitive to external pressure changes and vibrations, and have improved cooling of the gain medium (20) and reduced thermal lensing effect. In the monolithic laser structure, the gain medium (20) is separated from an optically transmissive plate (24) on one side and a wave plate (21) on the other side by spacers to form narrow air gaps (31 and 33) which provide effective cooling of the gain medium (20) and reduced the thermal lensing effect. Such an arrangement is further combined with a pressure-insensitive brewster polarizer such as a solid brewster polarizer (42 and 46), or a pressure-sealed brewster plate (249), to form a pressure-insensitive laser cavity. The wave plate (2') cooperates with the brewster polarizer (42 and 4 6) to select the wavelength of the solid state laser.

Apparatus of pulsed solid-state laser type

PORTABLE LASER DEVICE

MOUNTING VANE FOR OPTICAL ELEMENT OF A LASER

A mount for an optical element such as in a laser, optical amplifier, or other optical system, is disclosed. The mount is a mounting vane for cooling the optical element by a fluid stream. The optical element may be a gain medium generating heat. The mounting vane comprises: an input section with a leading edge for meeting the fluid stream; a diffuser section which tapers to a trailing edge; and a plane section with an aperture for receiving the optical element for cooling by the fluid stream, the plane section arranged between the input section and diffuser section, wherein the diffuser section includes one or more flow guiding fins protruding from the diffuser section. The mounting vane may be stacked with a plurality of other mounting vanes in a manifold.

LASER WAVELENGTH CONTROL UNIT WITH PIEZOELECTRIC DRIVER

An electric discharge laser with fast wavelength correction. Fast wavelength correction equipment includes at least one piezoelectric drive and a fast wavelength measurement system and fast feedback response times. In a preferred embodiment, equipment is provided to control wavelength on a slow time frame of several milliseconds, on an intermediate time from of about one to three millisecond and on a very fast time frame of a few microseconds. Techniques include a combination of a relatively slow stepper motor and a very fast piezoelectric driver for tuning the laser wavelength using a tuning mirror. A preferred control technique is described (utilizing a very fast wavelength monitor) to provide the slow and intermediate wavelength control and a piezoelectric load cell in combination with the piezoelectric driver to provide the very fast (few microseconds) wavelength control.

Very narrow band, two chamber, high rep-rate gas discharge laser system

An oscillator-amplifier gas discharge laser system and method is disclosed which may comprise a first laser unit which may comprise a first discharge region which may contain an excimer or molecular fluorine lasing gas medium; a first pair of electrodes defining the first discharge region containing the lasing gas medium, a line narrowing unit for narrowing a spectral bandwidth of output laser light pulse beam pulses produced in said first discharge region; a second laser unit which may comprise a second discharge chamber which may contain an excimer or molecular fluorine lasing gas medium; a second pair of electrodes defining the second discharge region containing the lasing gas medium; a pulse power system providing electrical pulses to the first pair of electrodes and to the second pair of electrodes producing gas discharges in the lasing gas medium between the respective first and second pair of electrodes, and laser parameter control mechanism modifying a selected parameter of a selected ...

Laser spectral engineering for lithographic process

An integrated circuit lithography technique called spectral engineering by Applicants, for bandwidth control of an electric discharge laser. In a preferred process, a computer model is used to model lithographic parameters to determine a desired laser spectrum needed to produce a desired lithographic result. A fast responding tuning mechanism is then used to adjust center wavelength of laser pulses in a burst of pulses to achieve an integrated spectrum for the burst of pulses approximating the desired laser spectrum. The laser beam bandwidth is controlled to produce an effective beam spectrum having at least two spectral peaks in order to produce improved pattern resolution in photo resist film. Line narrowing equipment is provided having at least one piezoelectric drive and a fast bandwidth detection control system having a time response of less than about 2.0 millisecond. In a preferred embodiment, a wavelength tuning mirror is dithered at dither rates of more than 500 dithers per second ...

OPTICAL SYSTEM ELEMENT, FOR RECEIVING A PRESSURISED FUNCTIONAL FLUID

An optical system element includes a first enclosure designed for receiving in circulation a functional fluid and at least one inlet and/or outlet window located on the first enclosure and through which a light beam can pass. The inlet and/or outlet window includes two viewports which delimit a spacer cavity adjacent to the first enclosure. The spacer cavity is designed to receive a second fluid with a predetermined optical index and is equipped with a device for adjusting the pressure therein. Degradation of a beam during its passage through the inlet and/or outlet window can be limited by careful selection of the optical index of the second fluid and the pressure in the spacer cavity.

Movable Modular Housing for a Short Pulse Laser with Integrated Amplifier

The invention relates to a short pulse laser (1) having a first optical plate (3) on which a seed laser oscillator (4), a pulse picker (5), and a fiber coupling-in optical unit (6) are mounted so as to be mechanically stable in relation to one another, and second optical plate (7), which is separate from the first optical plate (3) and on which a fiber coupling-out optical unit (9) and at least one amplifier stage (8, 30, 31) are mounted so as to be mechanically stable in relation to one another. The fiber coupling-in optical unit (6) of the first optical plate (3) and the fiber coupling-out optical unit (9) of the second optical plate (7) are optically interconnected by a flexible light guiding element (10). The hybrid short pulse laser (1) has a compact design and can be operated at low cost.

Optical system useful in a device for laser material processing, comprises a housing, optical elements arranged inside the housing and having an optically active surface, a reception zone for receiving a flushing gas, and a flushing device

The optical system comprises a housing (100), optical elements (101, 102) arranged inside the housing and having an optically active surface, on which the light vertically strikes under an incident angle of 30[deg] to the surface normal during the operation of the optical system, a reception zone for receiving a flushing gas from an immediate vicinity of the optical element, and a flushing device (130) for supporting a flushing gas flow (140) from the immediate vicinity of the optical element into the reception zone. The optical element is lens, prism, mirror or beam splitter. The optical system comprises a housing (100), optical elements (101, 102) arranged inside the housing and having an optically active surface, on which the light vertically strikes under an incident angle of 30[deg] to the surface normal during the operation of the optical system, a reception zone for receiving a flushing gas from an immediate vicinity of the optical element, and a flushing device (130) for supporting ...

Diffusion-cooled COÂ laser with flexible housing

Mount for a laser disc

A mounting arrangement for an optical element, such as gain medium, for a laser, optical amplifier or other optical systems is disclosed. The mounting arrangement is applied to a vane assembly for cooling by a gas or liquid stream. The vane assembly comprises: an optical element (162); a vane plate (160) having an aperture, the optical element mounted in the aperture; and a retainer (170) arranged to fit between the optical element and the vane plate to provide a compressive force at the edge of the optical element to hold the optical element in the aperture. The retainer may be a resilient element or spring element. The retainer may be held in position using retaining rings. The optical element may be a Nd:YAG laser disc cooled by circulating He gas and the edge of the laser disc may be electrically heated to decrease the temperature gradient within the pumped laser disc. Reduction of thermally induced aberrations within high power lasers.

LASER COOLING SYSTEM AND LASER COOLING PROCESS

SOLID LASER WITH GASKÜHLUNG IN CLOSED CYCLE

Extreme repetition rate gas discharge laser with improved blower motor

LASER THERMAL MANAGEMENT SYSTEMS AND METHODS

A laser system thermal management system includes a laser gain assembly a nd a thermal management assembly. The laser gain assembly includes a laser g ain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reserv oir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the co oled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

Air-cooled laser device

Laser optical fiber tray

Device for emitting a laser beam with anti-transverse lasing and with longitudinal cooling

The invention relates to a device for emitting a laser beam, which comprises a cylindrical solid amplifier medium (1), having a fluorescence wavelength lambda., delimited by a surface sigma connecting two faces S1 and S2 and intended to be pumped through both the faces, or one of them, in order to become a gain medium. It comprises a cooling fluid (31) of thermal conductivity Cr in contact with the amplifier medium (1) over one of the faces, and an index matching liquid (21) that absorbs or scatters the fluorescence wavelength, of thermal conductivity Ci < 0.3 Cr, in contact with the amplifier medium (1) over its surface sigma.

Structure d'illumination d'un barreau laser, à sources optiques défocalisées

Le domaine de l'invention est celui des lasers de puissance pompés par des sources optiques cohérentes, telles que des diodes lasers. L'objectif de l'invention est de fournir une structure d'illumination d'un barreau laser permettant à la fois une bonne évacuation des calories dégagées par les sources optiques cohérentes de pompage, et une bonne homogénéité des opérations de pompage du barreau La structure est caractérisée en ce que les sources optiques 12 d'au moins un jeu de sources optiques sont disposées sur un même support délocalisé 14, et en ce que ladite structure comprend des moyens réfléchissants 10, de renvoi vers le barreau 17 du faisceau d'illumination dudit jeu de sources optiques délocalisées.

Patent FR2150264A2

Very narrow band, two chamber, high rep rate gas discharge laser system

An injection seeded modular gas discharge laser system capable of producing high quality pulsed laser beams at pulse rates of about 4,000 Hz or greater and at pulse energies of about 5 mJ or greater. Two separate discharge chambers are provided, one of which is a part of a master oscillator producing a very narrow band seed beam which is amplified in the second discharge chamber. The chambers can be controlled separately permitting separate optimization of wavelength parameters in the master oscillator and optimization of pulse energy parameters in the amplifying chamber. A preferred embodiment in an ArF excimer laser system configured as a MOPA and specifically designed for use as a light source for integrated circuit lithography. In the preferred MOPA embodiment, each chamber comprises a single tangential fan providing sufficient gas flow to permit operation at pulse rates of 4000 Hz or greater by clearing debris from the discharge region in less time than the approximately 0.25 milliseconds ...

LASER SPARK PLUG

Laser spark plug (1), comprising a pump light source (12) and a longitudinally pumped laser resonator (6) which are arranged in each case in the housing (2) of the laser spark plug (1), characterized by a cooling-air inlet (30), a cooling-air outlet (32) and a cooling region (24) which connects the cooling-air inlet (30) to the cooling-air outlet (32), wherein the cooling region (24) surrounds the pump light source (12) at least in regions.

6 KHz AND ABOVE GAS DISCHARGE LASER SYSTEM

A high pulse repetition rate gas discharge laser system pulse power system magnetic reactor may comprise a housing comprising a core containing compartment between an inner wall of the housing, an outer wall and a bottom wall of the housing; a cooling mechanism operative to withdraw heat from the at least one of the inner wall, outer wall and bottom of the housing; at least one two magnetic cores contained within the core containing compartment; a cooling fin disposed between each of the at least two magnetic cores; and a thermal conductivity enhancement mechanism intermediate at least one of each respective cooling fin and each respective core and a respective one of the inner wall, the outer wall or the bottom wall, the thermal conductivity enhancement mechanism comprising a band comprising a plurality of torsion spring or leaf spring elements.

Fiber laser oscillator and clean bench mountable to the same

A fiber laser oscillator includes a housing that accommodates an optical unit such that the optical unit is able to be drawn out of the housing; and a clean bench that is detachable to a side of the optical unit, and defines a closed space which is isolated from outside, in which a communication opening that is in communication with an internal space of the housing is defined in the clean bench.

High power laser system

A laser system including a lasing medium (gas, liquid or solid) in an annular configuration with means defining a stationary lasing region in a portion of the lasing medium and means for rotating the lasing medium to rotate heated portions of the medium into heat exchange relationship with the surrounds for cooling and bringing cooled portions of the medium into the lasing region.

Laser treatment apparatus

A laser treatment apparatus for performing treatments on an affected part by irradiating the affected part with a laser beam for treatment is disclosed. This apparatus includes a laser oscillator, a cooling unit including a fan which cools the laser oscillator, a temperature sensor which directly or indirectly detects a temperature of the laser oscillator, and a control unit which drives the fan at roughly constant low speed when a detected temperature by the temperature sensor is below a predetermined reference value and at roughly constant high speed when the detected temperature is the predetermined reference value or more.

High efficiency, low cost, laser power supply

The present application relates to air-cooled electronic devices. An exemplary apparatus has an enclosure including one or more interior surfaces. The interior surfaces at least partially define a plenum. A support member is situated in the enclosure and defines a position reference plane, which can at least partially define the plenum. The apparatus further includes an air-to-fluid heat exchanger situated in the enclosure adjacent the support member, and one or more device bays configured to receive at least one corresponding electronic device. The device bays can be located adjacent the support member such that the position reference plane defines a boundary between the device bays and the plenum. The device bays, the plenum, and the air-to-fluid heat exchanger are in fluid communication with one another along a flow path defined within the enclosure, and the enclosure restricts an air flow along the flow path from exiting the enclosure.

Laser device

A laser device includes a first laser medium and a second laser medium that have a first surface and a second surface opposite to the first surface, and receive input of excitation light and seed light from the first surface side to amplify the seed light, a holder that holds the first laser medium and the second laser medium; and a pair of cooling units that cool the first laser medium and the second laser medium according to change in volume of a refrigerant.

LASER OPTICAL FIBER TRAY

A laser optical fiber tray is generally presented. In some embodiments, the optical fiber tray comprises an enclosure, coupled with a laser system rack, having an opening in the enclosure to accept a feeding fiber exiting from the laser system rack, an opening in the enclosure to allow passage of the feeding fiber out of the enclosure, and a user-accessible space within the enclosure to contain a length of the feeding fiber. In some embodiments, the optical fiber tray is mounted to a top panel of the laser system rack. In some embodiments, the optical fiber tray is mounted to a top panel of an external module which is mounted to a top panel of the laser system rack. Other embodiments are also disclosed and claimed.

LASER DEVICES UTILIZING ALEXANDRITE LASER OPERATING AT OR NEAR ITS GAIN PEAK AS SHORTER-WAVELENGTH PUMPING SOURCES AND METHODS OF USE THEREOF

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency.

LASER MEDIUM UNIT AND LASER DEVICE

Disclosed is a laser medium unit that includes a laser medium and a holding body. The laser medium has a pair of end surfaces. The holding body surrounds the laser medium when viewed form a direction intersecting with the pair of end surfaces and holds the laser medium. The holding body includes a deformation allowing portion that extends from the inside to the outside of the holding body when viewed from the direction intersecting with the pair of end surfaces. The laser medium and the holding body are in contact with each other. A contact region of the holding body with the laser medium has a width in the direction intersecting with the pair of end surfaces and extends along a side surface of the laser medium when viewed from the direction intersecting with the pair of end surfaces.

Diode-pumped solid-state laser oscillator

A diode-pumped solid-state laser oscillator having at least one pumping light source (6) that emits light in a predetermined wavelength band, and a laser medium (3) that absorbs light in the wavelength band. In the wavelength band, the optical absorption index of the laser medium (3) increases with an increase in wavelength, and the optical radiation energy of the light source (6) decreases with an increase in wavelength. Thus, with respect to wavelength changes, an increase in the optical absorption index is cancelled out by a decrease in the radiation energy, making the stability of the laser output less dependent on the temperature of the optical pumping medium (6) or laser medium (3).

ТВЕРДОТЕЛЬНЫЙ ЛАЗЕР ДИСКОВИДНОЙ ФОРМЫ

FIELD: electricity. SUBSTANCE: disc-shaped solid laser includes a matrix (1) of semiconductor pumping laser, a resonator with a disc-shaped crystal (6) and an output lens (8), jet-fluid cooling system (10) for the laser crystal (6) and a collimator (2) of the pumping beam. Collimated pumping light enters the focusing resonator which contains two parabolic mirrors (4, 5) and a correcting mirror (7) and is focused many times to the laser crystal (6). In the first parabolic reflector there are only one or two inlet ports (9) of rectangular shape for pumping light. In case of one inlet port its geometric centre is shifted along the fast-acting axis of the semiconductor laser matrix. In case of two inlet ports they are distributed equally and symmetrically along the slow-acting axis of the semiconductor laser matrix. EFFECT: simplifying construction and increasing power of the laser. 8 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 517 963 C1 (51) МПК H01S 3/08 (2006.01) H01S 3/0941 (2006.01) H01S 3/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012148898/28, 19.04.2010 (24) Дата начала отсчета срока действия патента: 19.04.2010 (45) Опубликовано: 10.06.2014 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: CN 101414728 A, 22.04.2009. DE (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.11.2012 (86) Заявка PCT: CN 2010/071865 (19.04.2010) 2 5 1 7 9 6 3 19835108 A1, 17.02.2000. CN 1665082 A, 07.09.2005. RU 2365006 C2, 20.08.2009, . US 6611546 B1, 26.08.2003 (73) Патентообладатель(и): ХУАЧЖУН ЮНИВЕРСИТИ ОФ САЙЕНС ЭНД ТЕКНОЛОДЖИ (CN) R U Приоритет(ы): (22) Дата подачи заявки: 19.04.2010 (72) Автор(ы): ЧЖУ Сяо (CN), ЧЖУ Гуанчжи (CN), ЧЖУ Чанхун (CN), ЦИ Луцзюнь (CN), ШАН Цзяньли (CN), ДУАНЬ Синюнь (CN), ЧЭНЬ Пэн (CN) 2 5 1 7 9 6 3 R U WO 2011/130897 (27.10.2011) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и ...

СХЕМА ЛАЗЕРНОГО УСИЛИТЕЛЯ С ПОПЕРЕЧНОЙ НАКАЧКОЙ

... 1. Схема оптического усиления, содержащая:источник накачки, выполненный с возможностью генерации света на длине волны накачки вдоль оптического тракта;апертуру накачки, выполненную с возможностью приема света на длине волны накачки;область усиления, размещенную вдоль оптического тракта и включающую в себя элемент усиления, выполненный с возможностью усиления света на длине волны лазера, при этом область усиления характеризуется первой стороной, пересекающей оптический тракт, второй стороной, находящейся напротив первой стороны, третьей стороной, смежной первой и второй сторонам, и четвертой стороной, находящейся напротив третьей стороны;дихроичную секцию, размещенную между апертурой накачки и первой стороной области усиления, при этом дихроичная секция характеризуется низкой отражательной способностью на длине волны накачки и высокой отражательной способностью на длине волны лазера;первую секцию с оболочкой поблизости с третьей стороной области усиления; ивторую секцию с оболочкой поблизости ...

СПОСОБ И СИСТЕМА ДЛЯ АРХИТЕКТУРЫ КОМПАКТНОГО ЭФФЕКТИВНОГО ЛАЗЕРА

1. Модуль лазерного усилителя, включающий в себя камеру, причем модуль лазерного усилителя содержит:входное окно;зеркало, оптически связанное с входным окном и расположенное в первой плоскости;первую усилительную головку, расположенную по оптическому усилительному тракту рядом с первым концом камеры;вторую усилительную головку, расположенную по оптическому усилительному тракту рядом со вторым концом камеры; ирезонаторное зеркало, расположенное по оптическому усилительному тракту.2. Модуль лазерного усилителя по п. 1, который дополнительно содержит:поляризатор, оптически связанный с зеркалом и расположенный во второй плоскости, по существу, параллельной первой плоскости, причем вторая плоскость включает в себя оптический усилительный тракт; ичетвертьволновую пластинку, расположенную по оптическому усилительному тракту.3. Модуль лазерного усилителя по п. 1, который дополнительно содержит ячейку Поккельса и второе резонаторное зеркало, расположенное во второй плоскости.4. Модуль лазерного усилителя по п. 1, который дополнительно содержит ретрансляционный телескоп, расположенный по оптическому усилительному тракту.5. Модуль лазерного усилителя по п. 4, который дополнительно содержит второй ретрансляционный телескоп, расположенный по оптическому усилительному тракту между второй усилительной головкой и резонаторным зеркалом.6. Модуль лазерного усилителя по п. 1, который дополнительно содержит транспортный телескоп, расположенный в первой плоскости.7. Модуль лазерного усилителя по п. 6, который дополнительно содержит выходное окно, оптически связанное с транспортным телескопом.8. Модуль лазерного усилите РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H01S 3/063 (13) 2013 124 517 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013124517/28, 28.10.2011 (71) Заявитель(и): ЛОРЕНС ЛИВЕРМОР НЭШНЛ СЕКЬЮРИТИ, ЭлЭлСи (US) Приоритет(ы): (30) Конвенционный приоритет: 29.10.2010 US 61/408,222 (85) Дата начала рассмотрения ...

ПОРТАТИВНОЕ ЛАЗЕРНОЕ УСТРОЙСТВО

... 1. Ручное лазерное устройство, включающее: кожух, образующий в значительной степени полое внутреннее пространство; лазерный эмиттер, расположенный в вышеупомянутом внутреннем пространстве и имеющий, как минимум, лампу накачки и стержень активного лазерного вещества, отделенные друг от друга; источник, вырабатывающий поток газового хладагента во внутреннем пространстве; и систему потока охлаждающей жидкости, окружающую, по крайней мере частично, вышеупомянутый стержень активного лазерного вещества, при этом вышеупомянутая система потока охлаждающей жидкости расположена в пределах вышеупомянутого потока газового хладагента для отвода от него тепла. 2. Ручное лазерное устройство по п.1, в котором вышеупомянутая система потока охлаждающей жидкости представляет из себя систему жидкого хладагента, включающую в себя кожух, имеющий удлиненный канал, проходящий через него, при этом вышеупомянутый удлиненный канал выполнен с возможностью, по крайней мере, частичного вмещения в себя вышеупомянутого ...

FESTKOERPERLASERSTAEBE FUER HOHE LEISTUNGEN

Laseroszillatoreinheit und Laserbearbeitungsvorrichtung

Eine Laseroszillatoreinheit enthält eine Verstärkungseinheit (21), die eingerichtet ist, Laserlicht zu verstärken und verstärktes Laserlicht von einem Emissionsabschnitt (20) zu emittieren; ein Gehäuse (16) das die Verstärkungseinheit (21) bedeckt; und einen äußeren Stützmechanismus (17) und einen inneren Stützmechanismus (18), die auf dem Gehäuse (16) vorgesehen sind. Das Gehäuse (16) ist mit einem Fensterabschnitt (29) ausgebildet. Ein äußeres bewegliches Bein (34) gestattet es dem Gehäuse (16), sich in einer radialen Richtung um ein äußeres fixiertes Bein (33) herum zu verschieben. Ein inneres bewegliches Bein (36) erlaubt es der Verstärkungseinheit (21), sich in der radialen Richtung um ein inneres fixiertes Bein (35) herum zu verschieben. Ein durch einen Mittelpunkt des äußeren fixierten Beins (33) und einem Mittelpunkt des inneren fixierten Beins (35) gehende Gerade schneidet eine durch den Emissionsabschnitt (20) und dem Fensterabschnitt (29) gehende Gerade und eine optische Laserachse ...

Laser mit plattenfoermigen Laserelementen,denen die Anregungsenergie ueber die Stirnflaechen zugefuehrt wird,und mit einer seitlich angeordneten Strahlungsquelle fuer die Anregungsenergie

Diffusion-cooled CO²laser with flexible housing

METHOD AND SYSTEM FOR COMPACT EFFICIENT LASER ARCHITECTURE

A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.

DISK LASER

The different advantageous embodiments provide an apparatus and method comprising a substrate configured to increase an intensity of light at a desired wavelength. The substrate has a front side, a back side, and an outer edge. The substrate is configured to reflect the light received on the front side of the substrate. The substrate comprises ceramic. The substrate comprises a plurality of sections. The method and apparatus also comprise a material configured to attenuate the light passing between the plurality of sections. The material surrounds an edge of each section of the plurality of sections. The apparatus and method also comprise a cooling system configured to allow liquid nitrogen to be transmitted through the cooling system and receive heat generated in the substrate from the back side of the substrate. 118-. (canceled)19. A method for managing light , the method comprising:sending light from a pumping source onto a front side of a substrate comprising ceramic which is configured to increase an intensity of light at a desired wavelength;removing heat from a back side of the substrate with a cooling system configured to allow a gas to be transmitted through the cooling system, the gas being liquefied;amplifying, by the substrate, the light at a desired wavelength as the light is transmitted through the substrate; andreflecting the light to a location.20. The method of claim 19 , wherein the step of reflecting the light to the location comprises reflecting the light to the location selected from the group consisting of another substrate or a target.21. (canceled)22. The method of claim 19 , wherein the substrate comprises a number of sections including a first suppression material at a number of locations within each section of the plurality of sections claim 19 , the first suppression material comprises different sizes and shapes at each location of the number of locations claim 19 , the substrate further comprising an outer edge outside of which is second ...

LASER UNIT AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

There may be provided a laser unit including a display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit. 1. A laser unit comprising:a pair of electrodes;a fan configured to make flow of gas fed to a clearance between the electrodes;a motor configured to rotate the fan; anda display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit,the electric power consumed by the laser unit including electric power consumed by the motor,the electric energy consumed by the laser unit including electric energy consumed by the motor,the electric power consumed by the motor being calculated based on pressure of the gas fed to the clearance between the electrodes, andthe electric energy consumed by the motor being calculated based on the pressure of the gas fed to the clearance between the electrodes.2. The laser unit according to claim 1 , further comprising a charger configured to apply a voltage between the electrodes claim 1 , whereinthe electric power consumed by the laser unit includes one or more of electric power consumed by the charger, the electric power consumed by the motor, and a sum of the electric power consumed by the charger and the electric power consumed by the motor, andthe electric energy consumed by the laser unit includes one or more of electric energy consumed by the charger, the electric energy consumed by the motor, and a sum of the electric energy consumed by the charger and the electric energy consumed by the motor.3. The laser unit according to claim 2 , wherein the electric energy consumed by the charger is obtained by integrating the electric energy consumed through applying the voltage to the pair of electrodes.4. The laser unit according to claim 2 , further comprising a standby-power supply configured to supply the laser unit with standby electric power claim 2 , whereinthe electric power consumed by ...

LASER APPARATUS AND EUV LIGHT GENERATION SYSTEM

A laser apparatus includes: a plurality of envelope blocks each provided with an optical element and a first temperature sensor and covering part of a laser beam path, the optical element being disposed on the laser beam path, the first temperature sensor being configured to measure a first temperature of gas at a position away from the optical element; an envelope body including the envelope blocks and covering the laser beam path; and a control unit connected with each first temperature sensor and configured to specify an envelope block at which increase of the first temperature is measured in the envelope body as an envelope block at which anomaly is occurring. 1. A laser apparatus comprising:a plurality of envelope blocks each provided with an optical element and a first temperature sensor and covering part of a laser beam path, the optical element being disposed on the laser beam path, the first temperature sensor being configured to measure a first temperature of gas at a position away from the optical element;an envelope body including the envelope blocks and covering the laser beam path; anda control unit connected with each first temperature sensor and configured to specify an envelope block at which increase of the first temperature is measured in the envelope body as an envelope block at which anomaly is occurring.2. The laser apparatus according to claim 1 , wherein the control unit determines that anomaly is occurring at an envelope block including a first temperature sensor having measured the first temperature to be equal to or higher than a predetermined threshold in the envelope body.3. The laser apparatus according to claim 1 , wherein the control unit determines that anomaly is occurring at an envelope block including a first temperature sensor having measured the change rate of the first temperature to be equal to or larger than a predetermined threshold in the envelope body.4. The laser apparatus according to claim 1 , whereinthe gas includes ...

On-demand laser marking device manufacturing method and laser marking device obtained by said method

On-demand laser marking device manufacturing method and laser marking device obtained by said method Method of producing equipment for marking products by laser, comprising the steps of: having at least one base plate; having various types of modules in which equipment components are grouped; having casings, rear covers and front covers that can be attached to said base plate; selecting modules from each of the different module types; removably attaching the selected modules to the base plate; attaching the casing, rear cover and front cover to the base plate.

METHOD AND SYSTEM FOR COMPACT EFFICIENT LASER ARCHITECTURE

A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path. 111-. (canceled)12. A method of amplifying a laser beam , the method comprising:receiving an input beam;directing the input beam along a first direction;amplifying the input beam a first time using a set of amplifiers, wherein amplification paths through the set of amplifiers are disposed along a second direction substantially orthogonal to the first direction;reflecting the amplified beam using a first cavity mirror;amplifying the amplified beam a second time using the set of amplifiers;image relaying the twice amplified beam along the first direction;reflecting the twice amplified beam using a second cavity mirror;amplifying the twice amplified beam a third time using the set of amplifiers;reflecting the three times amplified beam using the first cavity mirror;amplifying the three times amplified beam using the set of amplifiers; andoutputting the four times amplified beam.13. The method of wherein the input beam and the four times amplified beam are characterized by a linear polarization.14. The method of wherein the amplified beam claim 13 , the twice amplified beam claim 13 , and the three times amplified beam are characterized by circular polarization.15. The method of further comprising rotating a polarization state of the twice amplified beam using a Pockels cell.16. The method of wherein the first cavity mirror comprises a deformable mirror.17. The method of further comprising performing image relaying between the set of amplifiers.18. The method of further comprising amplifying the three ...

Resonant Cavity Conditioning For Improved Nonlinear Crystal Performance

Systems and methods to improve the performance of nonlinear crystals in a resonant cavity are presented. A humidified purge gas is supplied to a resonant cavity of a laser based illumination source that includes a nonlinear crystal. A small amount of water vapor is added to a clean, dry purge gas to prevent excessive drying of the nonlinear crystal during storage or operation. In some embodiments, a humidity injection system includes at least two parallel flow paths. One flow path includes a humidity injector and another does not include humidity injection. The amount of water vapor added to the purge gas flow is determined at least in part by the relative flow rate between the parallel flow paths. In some embodiments, the amount of water vapor added to the purge gas flow is regulated based on a measurement of humidity in the resonant cavity.

Scaling high-energy pulsed solid-state lasers to high average power

Techniques are provided for scaling the average power of high-energy solid-state lasers to high values of average output power while maintaining high efficiency. An exemplary technique combines a gas-cooled-slab amplifier architecture with a pattern of amplifier pumping and extraction in which pumping is continuous and in which only a small fraction of the energy stored in the amplifier is extracted on any one pulse. Efficient operation is achieved by propagating many pulses through the amplifier during each period equal to the fluorescence decay time of the gain medium, so that the preponderance of the energy cycled through the upper laser level decays through extraction by the amplified pulses rather than through fluorescence decay.

LASER UNIT AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

There may be provided a laser unit including a display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit. 1. A discharge-excited gas laser unit comprisinga display configured to display resource consumption of the discharge-excited gas laser unit,the resource consumption including at least one of laser gas consumption, purge gas consumption, cooling water consumption, and exhaust air consumption.2. The laser unit according to claim 1 , wherein the laser gas consumption includes at least one of:consumption of mixed gas of argon and neon; andconsumption of mixed gas of fluorine, argon, and neon.3. The laser unit according to claim 2 , further comprisinga controller configured to calculate the laser gas consumption.4. The laser unit according to claim 1 , wherein the laser gas consumption includes at least one of:consumption of mixed gas of krypton and neon; andconsumption of mixed gas of fluorine, krypton, and neon.5. The laser unit according to claim 3 , further comprisinga controller configured to calculate the laser gas consumption.6. The laser unit according to claim 1 , wherein the purge gas consumption includes at least one of consumption of nitrogen gas and consumption of helium gas.7. The laser unit according to claim 6 , further comprisinga controller configured to calculate the purge gas consumption.8. The laser unit according to claim 1 , further comprising:a charger;a pulse power module; anda chamber including a heat exchanger, whereinthe cooling water consumption includes consumption of water for cooling at least one of the charger, the pulse power module, and the heat exchanger.9. The laser unit according to claim 8 , further comprisinga controller configured to calculate the cooling water consumption.10. The laser unit according to claim 1 , wherein the exhaust air consumption includes exhaust air consumption for ventilation.11. The laser unit according to claim 10 , further ...

LASER PROCESSING MACHINE

Provided is a laser processing machine having a Peltier refrigeration element for cooling a cooling medium of a laser oscillator in a body of a small household laser processing machine. A laser processing machine includes a device body a laser oscillator received in the device body a cooling medium flow path provided in the device body for allowing a cooling medium of the laser oscillator to flow, and a cooling device provided with a Peltier refrigeration element for refrigerating the cooling medium flowing in the cooling flow path. A cooling fin for discharging heat generated by the Peltier refrigeration element is connected to the cooling device The cooling fin is installed directly upstream of an airflow direction of an air outlet for discharging air in the device body out of the device body 1. A laser processing machine , comprising:a device body; anda laser oscillator received in the device body,a cooling medium flow path installed in the device body for allowing a cooling medium of the laser oscillator to flow, anda cooling device provided with a Peltier refrigeration element for cooling the cooling medium flowing in the cooling medium flow path,wherein a cooling fin for dissipating heat generated by the Peltier refrigeration element are connected to the cooling device,the cooling fin being installed directly upstream of an airflow direction of an air outlet for discharging air in the device body out of the device body.2. The laser processing machine according to claim 1 , wherein a filter is installed upstream of the airflow direction at the cooling fin.3. The laser processing machine according to claim 1 , wherein a storage portion for storing the cooling medium is installed in the device body.4. The laser processing machine according to claim 3 , wherein the device body is in the shape of a rectangular parallelepiped claim 3 , andthe laser oscillator, the cooling medium flow path, the cooling device, the cooling fin and the storage portion are installed on ...

AIR COOLING TYPE LASER DIODE PUMPED CHAMBER

An air cooling type laser diode pumped chamber includes: a laser diode portion configured to emit an excitation beam toward a plurality of different directions; a laser gain medium disposed to face the laser diode portion, so as to generate laser beam by absorbing the excitation beam emitted from the laser diode portion; a gain medium mounting portion configured to fix the laser gain medium in a state where a region of the laser gain medium to absorb the excitation beam is exposed, and configured to receive and emit heat generated from the laser gain medium to the outside by an air cooling method; and a laser diode mounting portion configured to fix the laser diode portion, and configured to receive and emit heat generated from the laser diode portion to the outside by an air cooling method. 1. An air cooling type laser diode pumped chamber , comprising:a laser diode portion configured to emit an excitation beam toward a plurality of different directions;a laser gain medium disposed to face the laser diode portion, so as to generate laser beam by absorbing the excitation beam emitted from the laser diode portion;a gain medium mounting portion configured to fix the laser gain medium in a state where a region of the laser gain medium to absorb the excitation beam is exposed, and configured to receive and emit heat generated from the laser gain medium to the outside by an air cooling method; anda laser diode mounting portion configured to fix the laser diode portion, and configured to emit heat generated from the laser diode portion to the outside by an air cooling method.2. The air cooling type laser diode pumped chamber of claim 1 , wherein the laser gain medium includes:a first part having one exposed region; anda second part having another exposed region crossing the first part in a symmetrical manner, andwherein the laser diode portion includes:a first laser diode configured to emit the excitation beam toward the first part; anda second laser diode configured to ...

OBJECT INFORMATION ACQUIRING APPARATUS AND LASER APPARATUS

An object information acquiring apparatus is used which includes: a laser medium; a temperature controlling unit for controlling a temperature of the laser medium; an excitation unit for exciting the laser medium; a control unit for controlling the temperature controlling unit and the excitation unit; a probe for receiving acoustic waves that are generated when an object is irradiated with a laser beam from the laser medium; and a processing unit for acquiring characteristic information relating to the object from the acoustic waves, wherein the control unit does not operate the excitation unit until the temperature of the laser medium falls within a predetermined range. 18.-. (canceled)9. A laser apparatus , comprising:a laser medium;temperature controlling means configured to control a temperature of the laser medium;excitation means configured to excite the laser medium;control means configured to control the temperature controlling means and the excitation means;first temperature measuring means configured to measure a first temperature of the laser medium; andsecond temperature measuring means configured to measure a second temperature of a substance which is circulated near the laser medium for heating the laser medium,wherein the control means is configured to control the excitation means based on the first temperature and the second temperature.10. The laser apparatus according to claim 9 , wherein the control means is configured not to activate the excitation means until the first temperature reaches a first predetermined value.11. The laser apparatus according to claim 10 , wherein the first predetermined value is 80 degrees Celsius.12. The laser apparatus according to claim 9 , wherein the control means is configured not to activate the excitation means until the second temperature reaches a second predetermined value.13. The laser apparatus according to claim 12 , wherein the second predetermined value is larger than 20 degrees Celsius and smaller than ...

AIR COOLED LASER SYSTEMS USING OSCILLATING HEAT PIPES

Provided are air cooled laser systems, such as portable air cooled laser systems, and methods of operating thereof. An air cooled laser system includes an oscillating heat pipe having one end thermally coupled to one or more laser diodes and the other end being air cooled. The oscillating heat pipe has an extremely high thermal conductivity (e.g., much higher than that of copper) which allows using ambient air for cooling. This air cooling aspect reduces the size, weight, and complexity of the system. Furthermore, the air cooling aspect reduces power consumption since no power is used for liquid circulation. To enhance air-cooling characteristics, the end of the oscillating heat pipe away from the diodes may be thermally coupled to one or more heat dissipating fins. Furthermore, the system may be equipped with a blower for controlling the flow of air around that end. 1. An air cooled laser system comprising: 'wherein the oscillating heat pipe has a highest heat transfer coefficient in a direction between the first end and the second end; and', 'an oscillating heat pipe looping between a first end and a second end opposite of the first end,'} wherein the laser diode is disposed on and thermally coupled to the first end of the oscillating heat pipe, and', 'wherein the second end of the oscillating heat pipe is air cooled., 'a laser diode operable as a light source,'}2. The air cooled laser system of claim 1 , further comprising one or more heat dissipating fins disposed on and thermally coupled to the second end of the oscillating heat pipe providing air cooling to the second end of the oscillating heat pipe.3. The air cooled laser system of claim 2 , further comprising a blower configured to generate an air flow around the one or more heat dissipating fins.4. The air cooled laser system of claim 3 , further comprising a temperature sensor configured to measure a temperature of the first end of the oscillating heat pipe or a temperature of the laser diode claim 3 , ...

LASER OSCILLATOR WITH ENHANCED MAINTAINABILITY

A laser oscillator includes a first structure disposed with an optical section, a second structure disposed with a power source section, and an electric cable that electrically connects the optical section and the power source section. The first structure is removably coupled to the second structure, the electric cable is removably connected to at least one of the power source section and the optical section, and the optical section is allowed to be replaced. 11. A laser oscillator () comprising:{'b': 11', '10, 'a first structure () disposed with an optical section ();'}{'b': 21', '20, 'a second structure () disposed with a power source section (); and'}{'b': 30', '10', '20, 'an electric cable () that electrically connects the optical section () and the power source section (), wherein'}{'b': 11', '21', '30', '10', '20', '10, 'the first structure () is removably coupled to the second structure (), the electric cable () is removably connected to at least one of the optical section () and the power source section (), and the optical section () is allowed to be replaced.'}21. The laser oscillator () of claim 1 , wherein{'b': 10', '12', '20', '22', '30', '12', '22', '12, 'the optical section () includes one or a plurality of optical units (), the power source section () includes one or a plurality of power units (), the electric cable () is removably connected to at least one of the optical unit () and the power unit (), and the optical unit () is allowed to be replaced.'}31. The laser oscillator () of claim 1 , wherein{'b': 11', '21', '11', '21, 'the first structure () has a rectangular parallelepiped shape, the second structure () has an L-shape, and the first structure () is disposed on an upper side of the second structure ().'}41. The laser oscillator () of claim 3 , wherein{'b': 40', '21', '20', '21, 'an input section () is further disposed on a side of the second structure (), and the power source section () is disposed below the second structure ().'}51. The ...

High-Power Ytterbium Doped Calcium Fluoride Mode-Locked Laser and Methods of Use

A high-power ytterbium-doped calcium fluoride laser system is disclosed herein which includes at least one pump source, at least one laser cavity formed by at least one high reflector and at least one output coupler, and at least one ytterbium-doped calcium fluoride optical crystal positioned within the laser cavity in communication with the pump source, the ytterbium-doped calcium fluoride optical crystal configured to output at least one output signal of at least 20 W, having a pulse width of 200 fs or less, and a repetition rate of at least 40 MHz. 1. A high-power ytterbium-doped calcium fluoride laser system , comprising:at least one pump source;at least one laser cavity formed by at least one high reflector and at least one output coupler;at least one ytterbium-doped calcium fluoride optical crystal positioned within the at least one laser cavity, the at least one ytterbium-doped calcium fluoride optical crystal in communication with and pumped by the at least one pump signal and configured to output at least one output signal having a output power of 20 W or more and pulse width of 200 fs of less.2. The high-power ytterbium-doped calcium fluoride laser system of wherein the at least one pump signal comprises a continuous wave pump signal.3. The high-power ytterbium-doped calcium fluoride laser system of wherein the at least one output signal comprises a continuous wave mode-locked signal.4. The high-power ytterbium-doped calcium fluoride laser system of wherein the at least one pump source comprises multiple laser diode emitters located within a single diode package coupled to a single fiber optic device claim 1 , each emitter configured to output an optical signal into the single fiber optic device claim 1 , the single fiber optic device configured to receive the optical signals from the multiple laser diode emitters and output a single pump signal.5. The high-power ytterbium-doped calcium fluoride laser system of further comprising at least one at least one ...

Laser amplifier module

A fluid-cooled laser amplifier module ( 100 ) is disclosed which comprises: a casing; a plurality of slabs ( 110 ) of optical gain medium oriented in parallel in the casing for cooling by a fluid stream ( 154, 156 ); a polarisation rotator ( 120 ) disposed between a first group of one or more slabs ( 111 ) of the optical gain medium and a second group of one or more slabs ( 112 ) of the optical gain medium; optical windows ( 150, 152 ) for receiving an input beam or pulse ( 130 ) for amplifying by the slabs and for outputting the amplified beam or pulse ( 140 ); and fluid stream ports ( 155, 157 ) for receiving and discharging the fluid stream for cooling the slabs.

SYSTEM FOR COOLING ELECTRONIC COMPONENTS

A system for cooling electronic components is provided, the system comprising: a first electronic component having a first operating temperature; a second electronic component having a second operating temperature greater than the first operating temperature; a vapour compression loop configured to cool the first electronic component to the first operating temperature; a pumped cooling loop configured to cool the second electronic component to the second operating temperature; and a heat exchanger between the vapour compression loop and the pumped cooling loop, the heat exchanger configured to transfer heat from the pumped cooling loop to the vapour compression loop before the second electronic component is cooled and after the first electronic component is cooled. 1. A system comprising:a first electronic component having a first operating temperature;a second electronic component having a second operating temperature greater than the first operating temperature;a vapour compression loop configured to cool the first electronic component to the first operating temperature;a pumped cooling loop configured to cool the second electronic component to the second operating temperature; anda heat exchanger between the vapour compression loop and the pumped cooling loop, the heat exchanger configured to transfer heat from the pumped cooling loop to the vapour compression loop before the second electronic component is cooled and after the first electronic component is cooled.2. The system of claim 1 , wherein the heat exchanger is located after the first electronic component on the vapour compression loop and before the second electronic component on the pumped cooling loop.3. The system of claim 1 , can further comprise a cold plate claim 1 , wherein each of the first electronic component and the second electronic component are mounted to the cold plate.4. The system of claim 3 , wherein each of the vapour compression loop and the pumped cooling loop comprise a respective ...

LASER DEVICES UTILIZING ALEXANDRITE LASER OPERATING AT OR NEAR ITS GAIN PEAK AS SHORTER-WAVELENGTH PUMPING SOURCES AND METHODS OF USE THEREOF

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency. 1. A system comprising: wherein the Alexandrite laser pumping subsystem is configured to:', '1) produce wavelengths between 700 and 820 nm, and', i) a duration between 1 to 10 milliseconds, and', 'ii) an energy measuring up to 100 Joules;, '2) produce a pump pulse having, 1) at least one optical fiber, and', '2) at least one Lens system,', 'wherein the at least one optical fiber is configured to deliver an Alexandrite output beam of an Alexandrite gain medium into the at least one Lens system;, 'wherein the Alexandrite laser pumping subsystem comprises], '(i) an Alexandrite laser pumping subsystem;'}(ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; [ wherein a Tm:YAG gain medium of the Tm:YAG laser subsystem is optically pumped by the Alexandrite laser pumping subsystem;', 'wherein the Tm:YAG gain medium is doped with Tm3+ ions to a concentration of between 1% and 50% Tm3+ ions; and', 'wherein the at least one Lens system is configured to collimate the Alexandrite output beam from the at least one optical fiber to a size that is smaller than ...

COOLING DEVICE, LASER DEVICE, AND IMAGE PROCESSING APPARATUS

A cooling device including a cooling controller cools a laser light source in a laser device. The laser light source irradiates a medium with a laser beam. The cooling controller controls a cooling operation according to data associated with a heating state of a laser light source in the laser device. 1. A cooling device to cool a laser light source of a laser device to irradiate a medium with a laser beam , the cooling device comprising:a cooling controller to control a cooling operation of the cooling device according to data associated with a heating state of the laser device.2. The cooling device according to claim 1 , wherein the laser device is an image forming apparatus having at least two operating modes ofa first operating mode to irradiate a thermoreversible recording medium with a laser beam to record an image thereon;a second operating mode to irradiate a thermoreversible recording medium with a laser beam to erase an image therefrom; anda third operating mode to irradiate a thermoreversible recording medium having a recorded image with a laser beam to erase the recorded image and record another image thereon,wherein the cooling controller controls the cooling operation of the cooling device according to the at least two operating modes.3. The cooling device according to claim 2 , further comprising a fan claim 2 , operatively connected to the cooling controller claim 2 , to cool the laser light source claim 2 ,wherein the cooling controller controls a rotation speed of the fan.4. The cooling device according to claim 3 , wherein the cooling controller controls the rotation speed of the fan in the third operating mode to be slower than the rotation speed of the fan in the second operating mode and faster than the rotation speed of the fan in the first operating mode.5. The cooling device according to claim 3 , further comprising a pump to deliver a coolant to cool the laser light source claim 3 ,wherein the cooling controller controls the fan and the ...

LASER DEVICES UTILIZING ALEXANDRITE LASER OPERATING AT OR NEAR ITS GAIN PEAK AS SHORTER-WAVELENGTH PUMPING SOURCES AND METHODS OF USE THEREOF

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency. 1. A laser system comprising: [{'sup': '3+', '1) an output wavelength substantially within the absorption band of Tm ion containing laser media, preferably between 740 and 820 nm, such pumping sources include alexandrite, Ti:sapphire and certain semi-conductor diode lasers, and'}, {'sup': '3+', '2) an output pulse duration less than, or within a factor of two greater than to the upper state lifetime of Tm ion containing laser media, for Tm doped yttrium almuinum garnet (YAG) the upper state lifetime is approximately 10 ms, and'}, '3) an output energy measuring between 1 and 100 Joules per pulse, and', '4) average output power (pulse energy times pulse rate) between 1 Watt to 100 Watts;, '(i) an optical pumping source having following characteristics 1) at least one optical fiber, and', '2) at least one lens to convey said pump source optical output into the proximal end of said fiber, and', {'sup': '3+', '3) one or more conditioning optics at distal end of said optical fiber, which may include a focusing element such as a lens for converging pump source light ...

Method and system for cryocooled laser amplifier

A laser amplifier system includes a gain medium having a longitudinal axis and a plurality of sides substantially parallel to the longitudinal axis. The laser amplifier system also includes a waveguide having a plurality of inner surfaces. Each of the inner surfaces is optically coupled to one of the plurality of sides of the gain medium. The waveguide also includes a plurality of outer surfaces. The laser amplifier system further includes a cladding optically coupled to the outer surfaces of the waveguide.

GAS LASER

A gas laser, including: a semiconductor laser, an optical beam-shaping system, a pair of electrodes, a discharge tube, a rear mirror, and an output mirror. The pair of electrodes includes two electrodes. The electrodes are symmetrically disposed at an outer layer of the discharge tube in parallel. The electrodes are connected to a radio-frequency power supply via a matching network, and the electrodes operate to modify working gas in the discharge tube through radio-frequency discharge. The rear mirror and the output mirror are disposed at two end surfaces of the discharge tube, respectively. The rear mirror, taken together with the output mirror and the discharge tube, form a resonant cavity. The output mirror is configured to output a laser beam. 1. A gas laser , comprising:a semiconductor laser;an optical beam-shaping system;a pair of electrodes comprising two electrodes;a discharge tube;a rear mirror; andan output mirror;whereinthe two electrodes are symmetrically disposed in parallel at an outer layer of the discharge tube; the two electrodes are connected to a radio-frequency power supply via a matching network, and are configured to perform radio-frequency discharge on working gas in the discharge tube;the rear mirror and the output mirror are disposed at two end surfaces of the discharge tube, respectively; the rear mirror, the output mirror, and the discharge tube form a resonant cavity; the output mirror is configured to output a laser beam;an outer wall of the discharge tube in the vicinity of the optical beam-shaping system is coated with a transmission film; the transmission film is conformity to pump light in size and shape; the rest of the outer wall is coated with a reflection film, and an inner wall of the discharge tube is uncoated, or coated with another transmission film; the discharge tube is filled with the working gas; and the working gas is rare gas, or a mixture of rare gas and assistant gas;the semiconductor laser is configured to produce ...

Active fiber package

The present invention provides an active fiber package for use in a fiber laser, amplifier, or ASE source comprising: a plate-shape base comprising a groove having a configuration of at least two spirals for receiving and fixedly holding an active fiber therein, said at least two spirals are coplanar enabling visibility of said active fiber, the outer loop of one spiral transitioning smoothly to the outer loop of another spiral, and the inner loop of each one of said spirals transitioning smoothly into a relatively short straight section; wherein a portion of said straight section of one of said spirals spliced to a coupling fiber, and wherein multiple inner loops of each one of said spirals in proximity to said straight section having a relatively low radius of curvature for enabling tight coiling of said active fiber, thus, for reducing thermal modal instability (TMI) and increasing lasing power.

Air-cooled gas lasers and associated systems and methods

Embodiments of an air-cooled gas laser are disclosed herein. A laser configured in accordance with one embodiment includes a laser superstructure, an optical assembly, and an elongated thermal decoupler member having a first end portion fixedly coupled to the optical assembly and a second end portion fixedly coupled to the laser superstructure. The laser further includes an optical assembly that includes a first holder member fixedly coupled to the first end portion of the thermal decoupler, a second holder member pivotally coupled to the first holder member and fixedly coupled to the laser superstructure, and a flexible seal having a portion coupled to the laser structure and disposed at least between the first holder member and the second holder member.

AIR-COOLED GAS LASERS WITH HEAT TRANSFER RESONATOR OPTICS AND ASSOCIATED SYSTEMS AND METHODS

Embodiments of an air-cooled gas laser with heat transfer resonator optics are disclosed herein. A laser configured in accordance with one embodiment includes resonator optics having an optical element, a first heat sink element in surface-to-surface contact with a first side surface of the optical element, a second heat sink element in surface-to-surface contact with a second side surface of the optical element, and a carrier member carrying the optical element and the first heat sink element, and including a forward facing surface in surface-to-surface contact with the backside surface of the optical element. The resonator optics further include first and second biasing elements biasedly coupled to the carrier member and configured to bias the first and second heat sink elements against the first side and second side surfaces, respectively, of the optical element. 1. A laser comprising a resonator optics assembly , wherein the resonator optics assembly includes:an optical element having a first side surface, a second side surface opposite the first side surface, and a backside surface;a first heat sink element in surface-to-surface contact with the first side surface;a second heat sink element in surface-to-surface contact with the second side surface;a carrier member carrying the optical element and the first heat sink element, wherein the carrier member includes a forward facing surface in surface-to-surface contact with the backside surface of the optical element;a first biasing element biasedly coupled to the carrier member and configured to bias the first heat sink element against the first side surface of the optical element; anda second biasing element biasedly coupled to the carrier member and configured to bias the second heat sink element against the second side surface of the optical element.2. The laser of wherein the carrier member includes a raised outer portion adjacent the first heat sink element claim 1 , and wherein the first biasing element is ...

Mounting vane for optical element of a laser

A mount for an optical element such as in a laser, optical amplifier, or other optical system, is disclosed. The mount is a mounting vane ( 100 ) for cooling the optical element ( 125 ) by a fluid stream. The optical element may be a gain medium generating heat. The mounting vane comprises: an input section with a leading edge ( 110 ) for meeting the fluid stream; a diffuser section ( 130 ) which tapers to a trailing edge ( 135 ); and a Direction of plane section ( 120 ) with an aperture for receiving the optical element ( 125 ) for cooling by the fluid stream, the plane section arranged between the input section and diffuser section, wherein the diffuser section ( 130 ) includes one or more flow guiding fins ( 140 ) protruding from the diffuser section. The mounting vane may be stacked with a plurality of other mounting vanes in a manifold. The shape of the vane plate results in a turbulent fluid flow improving the heat exchange between a laser disc heated by optical pumping and a cryogenic He gas used for cooling.

Laser unit and non-transitory computer-readable storage medium

There may be provided a laser unit including a display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit.

CONDUCTIVELY-COOLED SLAB LASER

A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing. The laser-housing is formed from a hollow extrusion. An interior surface of the extrusion provides a ground electrode of the laser. Another live electrode is located within the extrusion, electrically insulated from and parallel to the ground electrode, forming a discharge-gap of the slab-laser. The electrodes are spaced apart by parallel ceramic strips. Neither the extrusion, nor the live electrode, include fluid coolant channels. The laser-housing is cooled by fluid-cooled plates attached to the outside thereof. 1. A gas-discharge slab laser , comprising:a laser-housing including an elongated unitary metal hollow extrusion having an interior surface thereof forming a first elongated electrode;a second elongated electrode located within the hollow portion of the elongated extrusion, the second elongated electrode spaced-apart and parallel to the first elongated electrode, the spaced-apart first and second elongated electrodes defining a discharge-gap of the slab laser, neither the elongated extrusion nor the second elongated electrode including any fluid coolant channels;at least one ceramic member for spacing apart the first and second elongated electrodes; anda first fluid-cooled plate attached to a first exterior surface of the elongated extrusion, adjacent the first elongated electrode.2. The slab laser as recited in further including a second fluid-cooled plate attached to a second exterior surface of the elongated extrusion claim 1 , which is on an opposite side of the elongated extrusion from the first exterior surface.3. The slab laser as recited in wherein each fluid cooled plate further includes a fluid conduit having a D-shaped cross-section pressed into a U-shaped groove formed in the fluid cooled plate.4. The slab laser as recited in wherein the conduit in each fluid cooled plate has a serpentine configuration.5. The slab laser as recited in wherein the ceramic member is in the ...

Laser devices utilizing alexandrite laser operating at or near its gain peak as shorter-wavelength pumping sources and methods of use thereof

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency.

Direct Impingement Cooling of Fibers

A system provides for a way for cooling an optical fiber. The system includes a coolant and a conduit. The conduit allows the coolant to flow through the conduit. At least part of the fiber passes through the conduit allowing the coolant to flow around the at least part of the fiber. In some configurations, the fiber runs parallel to the conduit. The system can include a pump diode that is part of an optical laser connected to an end of the fiber. The optical laser can further include a high reflector connected to the fiber and a partial reflector connected to the fiber to reflect some light back and forth between the high reflector and the partial reflector.

LASER OSCILLATOR WITH ENHANCED DEHUMIDIFICATION FUNCTION

Provided is a laser oscillator including: one or more heat generating parts disposed in a housing; a piping system through which cooling water flows to the one or more heat generating parts; a water cooling type dehumidifier that dehumidifies air inside the housing using the cooling water; and an air cooling type dehumidifier that includes a Peltier element attached with a cooling fin and a radiating fin and includes a cooling water plate configured to cool the radiating fin with the cooling water, wherein the air cooling type dehumidifier starts to dehumidify the air inside the housing using the cooling fin while the cooling water is not flowing and dehumidifies the air inside the housing by cooling the radiating fin using the cooling water plate when the cooling water is flowing. 1. A laser oscillator comprising:one or more heat generating parts disposed in a housing;a piping system through which cooling water flows to the one or more heat generating parts;a water cooling type dehumidifier that dehumidifies air inside the housing using the cooling water; andan air cooling type dehumidifier that includes a Peltier element attached with a cooling fin and a radiating fin and includes a cooling water plate configured to cool the radiating fin with the cooling water, whereinthe air cooling type dehumidifier starts to dehumidify the air inside the housing using the cooling fin when the cooling water is not flowing and dehumidifies the air inside the housing while cooling the radiating fin using the cooling water plate when the cooling water is flowing.2. The laser oscillator of claim 1 , further comprising:a controller that issues a command for the cooling water to flow after determining that the air cooling type dehumidifier performs dehumidification to a first criterion and that determines that both the water cooling type dehumidifier and the air cooling type dehumidifier perform dehumidification to a second criterion stricter than the first criterion.3. The laser ...

AIR-COOLED CARBON-DIOXIDE LASER

A carbon dioxide waveguide-laser includes an elongated resonator unit and an elongated power-supply unit. The resonator and power-supply units are spaced by a cooling unit including a plurality of longitudinally extending, spaced-apart fins, with fans arranged to drive air through the spaces between the fins. 1. A laser apparatus , comprising:an elongated, gas-filled resonator unit;an elongated radio-frequency (RF) power supply unit for energizing gas in the resonator unit, the resonator and power supply units aligned, spaced apart and parallel to each other;an elongated cooling unit including a plurality of elongated fins separating the power supply and resonator units, the fins being spaced and parallel to each other and extending in a length direction of the power supply and resonator units, opposite ends of the fins being in direct thermal contact with the resonator unit and the power supply unit respectively; andat least one fan arranged to drive air between the spaced-apart fins for cooling the power supply and resonator units.2. The apparatus of claim 1 , wherein the gas in the resonator unit is a mixture of gases including carbon dioxide.3. The apparatus of claim 1 , wherein the fan is arranged such that air is drawn into the cooling unit at about the center thereof claim 1 , and expelled from opposite ends of the cooling unit.4. A laser apparatus claim 1 , comprising:an elongated, gas-filled resonator unit;an elongated radio-frequency (RF) power supply unit for energizing gas in the resonator unit, the resonator and power supply units aligned, spaced apart and parallel to each other;an elongated cooling unit including a plurality of elongated fins separating the power supply and resonator units, the fins being spaced and parallel to each other and extending in a length direction of the power supply and resonator units,;at least one fan arranged to drive air between the spaced-apart fins for cooling the power supply and resonator units, wherein the fan is ...

LASER APPARATUS INCLUDING HEAT TRANSFER DEVICE FOR RELEASING HEAT INSIDE HOUSING TO THE OUTSIDE

A laser apparatus includes a heat transfer device having a cooling fin at a temperature lower than that of a heat radiation jacket, and a cooling fan. A controller controls the cooling fan so as to be stopped when temperature detected by a temperature sensor is lower than a temperature reference value and humidity detected by a humidity sensor is higher than a humidity reference value. The controller controls the cooling fan so as to be driven when temperature detected by the temperature sensor is higher than the temperature reference value and humidity detected by the humidity sensor is lower than the humidity reference value. 1. A laser apparatus comprising:a laser resonator configured to oscillate a laser beam;a housing configured to seal a space in which the laser resonator is disposed in an airtight manner;a temperature sensor configured to detect temperature of air inside the housing;a humidity sensor configured to detect humidity of the air inside the housing;a heat transfer device including a high-temperature part, a low-temperature part at a temperature lower than that of the high-temperature part, the low-temperature part being disposed inside the housing, and a cooling fan configured to generate a flow of air in the low-temperature part, and configured to transfer heat in the low-temperature part to the high-temperature part; anda controller including an operation control unit configured to control the cooling fan and a storage unit configured to store predetermined information; whereinthe storage unit stores a temperature reference value associated with temperature and a humidity reference value associated with humidity, for control of the cooling fan,the operation control unit performs control of stopping the cooling fan when temperature detected by the temperature sensor is lower than the temperature reference value and humidity detected by the humidity sensor is higher than the humidity reference value, andthe operation control unit performs control ...

Laser apparatus

In a laser apparatus, transmission of vibration, which is generated in a portion that generates a cooling gas flow, to a laser unit is suppressed, and heat generated from the laser unit is efficiently dissipated. A laser unit is housed inside a box-shaped housing having a plurality of faces. A frame supports a laser unit with a first mount interposed therebetween inside the housing. The frame has a through-hole penetrating from one face side to the other face side. A blower fan generates a flow of cooling gas for cooling the laser unit. The blower fan is attached to, for example, a second housing so as to face the laser unit. The cooling gas moves through the through-hole of the frame between the blower fan and the laser unit.

Diffraction Element Fixing Device

Provided is a fixing device for a diffraction element including an element installation portion where a diffraction element is installed, and an element fixing portion that fixes the diffraction element installed on the element installation portion, wherein the element installation portion includes an element installation surface for curving the installed diffraction element in a discretionary shape, and the element installation surface is formed in an arch-like shape such that deformation of the diffraction element due to pressure of a cooling fluid is reduced. 1. A fixing device for a diffraction element , comprising:an element installation portion with an upper surface on which a diffraction element is installed; andan element fixing portion that sandwiches and fixes an edge portion of the diffraction element installed on the element installation portion, whereinan element installation surface for deforming and supporting the diffraction element is formed on an inner wall surface of the element installation portion, andthe element installation surface is formed with a surface shape for curving and installing the diffraction element in a shape such that deformation of the diffraction element due to pressure of a cooling fluid flowing inside the element installation portion is reduced.2. The fixing device for a diffraction element according to claim 1 , wherein surface shapes of two of the element installation surfaces formed on two of the inner wall surfaces of the element installation portion that are opposing are formed in an identical curved surface shape with a central portion in a longitudinal direction raised in an arch-like shape or reversely concave claim 1 , and an element fixing surface with a reversed curved surface shape corresponding to the curved surface shape of the element installation surface is formed at a portion of the element fixing portion corresponding to the element installation surface.3. The fixing device for a diffraction element ...

Heat management system for heater element

본 발명은 발열체용 열관리시스템에 관한 것으로서 특히 상변화 열관리부와 냉각부를 직접 연결하여 소형 경량화를 이룸과 동시에 발열체의 성능 저하를 예방하는 발열체용 열관리시스템에 관한 것이다. 구성은 발열체용 열관리시스템으로서, 기액분리기와 펌프 및 발열체를 포함하고 발열체를 냉매의 상변화를 이용하여 열관리하는 상변화 열관리부와; 상기 상변화 열관리부의 발열체에서 발생된 열을 최종적으로 열관리시스템 외부로 배출하도록 응축기와 냉각팬과 압축기 및 팽창밸브를 포함하는 냉각부;로 구성되며, 상기 상변화 열관리부와 냉각부는 하나 이상의 구간에서 직접 연결되어 구동된다.

Laser Light Source Module

본 발명은 판체에 작용하는 레이저 광원 모듈을 개시하며, 기판; 제1 광선을 발생시켜 기판의 출광 구역의 방향으로 출사하는 제1 광원; 제2 광선을 발생시켜 기판의 출광 구역의 방향으로 출사하는 제2 광원; 제2 광원의 광학적 특성을 변경하는 제1 조절 모듈; 제1 광선, 제2 광선 및/또는 냉각 유닛이 판체에 작용하는 위치를 변경하는 제2 조절 모듈; 및 제2 조절 모듈과 선택적으로 동축 설치되며, 냉각 유닛에 연결되어 냉각 유닛을 판체에 작용 시 필요로 하는 각도로 변경하는 제3 조절 모듈을 포함한다. The present invention discloses a laser light source module acting on a plate body, the substrate; a first light source that generates a first light beam and exits in a direction of a light exit region of the substrate; a second light source for generating a second light ray and emitting it in the direction of the light exit region of the substrate; a first adjustment module for changing an optical characteristic of the second light source; a second adjustment module for changing a position at which the first light beam, the second light beam and/or the cooling unit act on the plate body; and a third adjustment module that is selectively installed coaxially with the second adjustment module and is connected to the cooling unit to change the angle required when the cooling unit acts on the plate body.

Method and system for compact efficient laser architecture

A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.

Method and apparatus for an increased output for a pumped laser using a moving aperture

A solid state lasing medium is pumped to produce a high repetition rate laser beam. The laser medium is pumped to cause maximum population inversion. The laser medium is greater in diameter than the aperture that defines the allowable beam path. In the preferred embodiment the off-axis laser beam that is produced is steered to become an on-axis laser beam using a novel SBSA (spinning beam steering assembly). The output of the laser is increased because as the SBSA spins, the area of the lasing medium that is not lasing is being charged or pumped. The laser medium can also be hollow to allow for pumping from either outside or inside the hollow bore or both. Similarly, this hollow bore in the laser medium could also allow cooling fluids to be circulated therethrough. Different embodiments of the SBSA are disclosed, including a variety of methods to pump the laser medium. Also, disclosed is a novel field removable or replaceable laser medium housing assembly.

A semiconductor pump discharge gas laser device

本发明公开了一种半导体激光泵浦放电气体激光器，包括半导体激光器、光学整形系统、电极对、放电管、匹配网络、射频电源、尾镜和输出镜，其特征在于：放电管内充有工作气体；电极对平行对称放置于放电管外；半导体激光为泵浦光，其中心波长与放电管内工作气体射频放电后产生的气体粒子吸收谱线相匹配，从放电管与电极对之间的侧面注入至放电管内。本发明激光器的放电管内腔具有对半导体泵浦激光的高反特性。本发明可以有效克服高功率连续单模激光、高功率皮秒飞秒激光的非线性效应，降低碱金属蒸气激光器对人和环境的不利影响，同时可以实现具有高脉冲能量、高光束质量、高量子效率、高泵浦效率、良好的大气与光纤传输特性的超高功率激光输出。

Patent DE3546280C2

Solid state laser oscillator

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Set of extremely narrow-band two-chamber gas-discharge lasers characterized in high pulse repetition frequency

FIELD: electric-discharge lasers including narrow-band gas-discharge ones characterized in high pulse repetition frequency. SUBSTANCE: each of proposed lasers designed for producing pulses at repetition frequency of 4000 Hz or higher at pulse energy about 5 to 10 mJ or higher affording radiation power output of 20 to 40 W or higher has two separate discharge chambers of which one is part of master oscillator generating narrow-band prime beam which is amplified in second discharge chamber. Working chambers can be controlled separately. Each working chamber has one tangential-flow fan producing gas flow sufficient for operation at pulse repetition frequency of 4000 Hz. Master oscillator is provided with radiation-line narrowing module incorporating fast-response adjusting mirror. EFFECT: enhanced quality of laser pulse radiation beams and power output. 78 cl, 80 dwg

Cooling system and mounting for slab lasers and other optical devices

Apparatus for extracting heat from objects such as a slab laser having an accessible flat surface subject to being heated and including a flat strip of material, preferably made from wafer grade semiconductor, such as silicon or gallium arsenide, and mounted in close proximity to the surface so as to leave a small gap therebetween of uniform thickness over an area of said surface to be cooled. A still gas fills the volume of the gap which is sufficiently small that the gas serves as an effective heat transfer medium from said surface to said strip from which heat is transferred to a medium mounted in thermal contact with the strip on the side away from said surface being cooled. The invention has particular application to the cooling of slab lasers.

Laser wavelength control unit with piezoelectric driver

An electric discharge laser (34) with fast wavelength correction. Fast wavelength correction equipment includes at least one piezoelectric drive and a fast wavelength measurement system (104) and fast feedback response times. In a preferred embodiment, equipment is provided to control wavelength on a slow time frame of several milliseconds, on a intermediate time from of about one to five milliseconds and on a very fast time frame of a few microseconds. Preferred techniques include a combination of a relatively slow stepper motor and a very fast piezoelectric driver for tuning the laser wavelength using a tuning mirror. Very fast wavelength control is provided with a piezoelectric load cell in combination with the piezoelectric driver. Preferred embodiments provide fast feedback control based on wavelength measurements, fast vibration control, active damping using the load cell and an active damping module (320), and transient inversion using feed forward algorithms based on historical burst data.

Laser unit and non-transitory computer-readable storage medium

There may be provided a laser unit including a display configured to display one or both of electric power consumed by the laser unit and electric energy consumed by the laser unit.

Correction of induced deformation in light amplifier - using cooling liq to maintain amplifying medium temp constant

The compensation technique for a light amplifier removes the effects of temperature gradients arising from the entry of pumped light from one side of the amplifier only. The technique maintains a constant temp. in the amplifying medium throughout its thickness. In order to control the temp. gradient the amplifier, in the form of disc, is held within an annulus sealed at the side fro which light to be amplified enters and provides a space linked into a cooling system on the side from which pump light enters. The cooling system consists of two switched stable sources with heat exchangers.

DEVICE FOR TRANSMITTING LONGITUDINAL COOLED LASER BEAM AND TRANSVERSE LASER BEAM

L'invention concerne un dispositif d'émission d'un faisceau laser qui comprend un milieu amplificateur solide (1) cylindrique, de longueur d'onde de fluorescence λ, délimité par une surface Σ reliant deux faces S1 et S2, destiné à être pompé par les deux faces ou l'une d'elles pour devenir un milieu à gain. Il comprend un fluide de refroidissement (31) de conductivité thermique Cr en contact avec le milieu amplificateur (1) selon l'une des faces, et un liquide d'adaptation d'indice (21) absorbant ou diffusant à la longueur d'onde de fluorescence, de conductivité thermique Ci < 0.3 Cr, en contact avec le milieu amplificateur (1) selon sa surface Σ. The invention relates to a device for emitting a laser beam which comprises a cylindrical solid amplifying medium (1), of fluorescence wavelength λ, delimited by a surface Σ connecting two faces S1 and S2, intended to be pumped. by both sides or one of them to become a profitable medium. It comprises a cooling fluid (31) of thermal conductivity Cr in contact with the amplifying medium (1) according to one of the faces, and an index matching liquid (21) absorbing or diffusing at the wavelength. fluorescence, thermal conductivity Ci <0.3 Cr, in contact with the amplifying medium (1) according to its surface Σ.

LASER APPARATUS

Anti-transverse lasing device with longitudinal cooling for emitting a laser beam

본 발명은 레이저 빔을 방출하는 디바이스에 관한 것으로, 2개의 면들 (S1 및 S2) 을 연결하는 표면 ( ) 에 의해 경계가 정해지고, 이득 매체가 되기 위해 면들 양자, 또는 이들 중 하나를 통해 펌핑되도록 의도되는 형광 파장 (λ) 을 갖는 원통형 고체 증폭기 매체 (1) 를 포함한다. 면들 중 하나상에서 증폭기 매체 (1) 와 접촉하는 열전도율 (Cr) 의 냉각 유체 (31), 및 그 표면 ( ) 상에서 증폭기 매체 (1) 와 접촉하는 열전도율 (Ci < 0.3 Cr) 의 형광 파장을 흡수하거나 산란하는 굴절률 매칭 액체 (21) 를 포함한다. The present invention relates to a device that emits a laser beam and comprises a surface connecting two surfaces (S1 and S2) And a cylindrical solid state amplifier medium 1 having a fluorescent wavelength (?) Intended to be pumped through either of the faces, or one of them, to become a gain medium. A cooling fluid 31 of thermal conductivity (Cr) in contact with the amplifier medium 1 on one of the surfaces, (21) that absorbs or scatters the fluorescent wavelength of the thermal conductivity (Ci < 0.3 Cr) in contact with the amplifier medium (1).

Continuous wave, frequency-doubled solid state laser systems with stabilized output

Abstract of the Disclosure A solid-state laser system for producing a frequency-doubled CW laser output beam having a stabi-lized output. The laser system includes within a three-mirror resonator cavity, a Nd: YAG laser rod operating at an output wavelength of 1.064 um in the TEM trans-verse mode, and a KTP frequency-doubling crystal. At one end of the laser cavity the beam is reflected from a folding mirror through the frequency-doubling crystal to another reflecting mirror which reflects both the fun-damental wavelength of the output beam from the laser rod, and also the doubled frequency beam at a wavelength of 0.532 um back through the frequency-doubling crystal onto the folding reflector. The folding reflector is coated to reflect light at the longer wave length but transmits substantially all of the light incident upon it at the 0.532 um wavelength. Cladding of the laser rod with Spinel or quartz and/or laminar flow cooling of the laser rod are utilized to maintain the temperature distribution over the surface of the laser rod substan-tially constant so as to stabilize the output power level at the frequency-doubled wavelength.

HIGH POWER SOLID BODY LASER BARS

Dans un oscillateur ou amplificateur pour laser à corps solide, l'élément-laser, constitué d'une matière cristalline, d'une matière céramique, de céramique vitreuse, de verre ou de matière plastique, est réalisé sous la forme d'un barreau ou d'une plaque ; les barreaux ou plaques sont traversés dans une direction longitudinale par des trous ou des fentes dans lesquels peut passer un fluide de refroidissement ; pour augmenter l'effet de refroidissement, les barreaux ou plaques peuvent aussi être pourvus d'un profil augmentant leur surface et réduisant les espacements entre les zones internes de la section et la surface. (CF DESSIN DANS BOPI) In an oscillator or amplifier for a solid-body laser, the laser element, consisting of a crystalline material, a ceramic material, a vitreous ceramic, glass or a plastic material, is made in the form of a rod or a plate; the bars or plates are traversed in a longitudinal direction by holes or slits in which a cooling fluid can pass; to increase the cooling effect, the bars or plates can also be provided with a profile increasing their surface and reducing the spacings between the internal zones of the section and the surface. (CF DRAWING IN BOPI)

DEVICE FOR TRANSMITTING LONGITUDINAL COOLED LASER BEAM AND TRANSVERSE LASER BEAM

L'invention concerne un dispositif d'émission d'un faisceau laser qui comprend un milieu amplificateur solide (1) cylindrique, de longueur d'onde de fluorescence λ, délimité par une surface Σ reliant deux faces S1 et S2, destiné à être pompé par les deux faces ou l'une d'elles pour devenir un milieu à gain. Il comprend un fluide de refroidissement (31) de conductivité thermique Cr en contact avec le milieu amplificateur (1) selon l'une des faces, et un liquide d'adaptation d'indice (21) absorbant ou diffusant à la longueur d'onde de fluorescence, de conductivité thermique Ci < 0.3 Cr, en contact avec le milieu amplificateur (1) selon sa surface Σ. The invention relates to a device for emitting a laser beam which comprises a cylindrical solid amplifying medium (1) with a fluorescence wavelength λ delimited by a surface Σ connecting two faces S1 and S2 intended to be pumped. by both sides or one of them to become a gain medium. It comprises a cooling fluid (31) of thermal conductivity Cr in contact with the amplifying medium (1) according to one of the faces, and an index matching liquid (21) absorbing or diffusing at the wavelength of fluorescence, thermal conductivity Ci <0.3 Cr, in contact with the amplifying medium (1) according to its surface Σ.

ILLUMINATION STRUCTURE OF A LASER BAR WITH DEFOCUSED OPTICAL SOURCES

Le domaine de l'invention est celui des lasers de puissance pompés par des sources optiques cohérentes, telles que des diodes lasers. L'objectif de l'invention est de fournir une structure d'illumination d'un barreau laser permettant à la fois une bonne évacuation des calories dégagées par les sources optiques cohérentes de pompage, et une bonne homogénéité des opérations de pompage du barreau. La structure est caractérisée en ce que les sources optiques 12 d'au moins un jeu de sources optiques sont disposées sur un même support délocalisé 14, et en ce que ladite structure comprend des moyens réfléchissants 10, de renvoi vers le barreau 17 du faisceau d'illumination dudit jeu de sources optiques délocalisées.

Laser cooling system and method

A folded sheet is used as a basis for a fin array to cool laser modules. The folded sheet has flat portions that are connected in thermal contact with the laser module, and fins formed by interconnecting portions. This arrangement is highly convenient for assembly, inexpensive, and provides for highly effective heat exchange.

ELEMENT OF AN OPTICAL SYSTEM, TO RECEIVE A FUNCTIONAL FLUID UNDER PRESSURE.

Elément (100) d'un système optique comportant : - une première enceinte (110), destinée à recevoir en circulation un fluide fonctionnel (120) ; et - au moins une fenêtre d'entrée et/ou sortie (140A; 140B), située sur la première enceinte et apte à laisser passer un faisceau lumineux (131). La fenêtre d'entrée et/ou sortie (140A ; 140B) comporte deux hublots (142A, 141A ; 142B, 141B) qui délimitent une cavité intercalaire (143A; 143B), adjacente à la première enceinte. La cavité intercalaire (143A ; 143B) est destinée à recevoir un second fluide, d'indice optique prédéterminé, et est munie d'un dispositif d'ajustement de la pression en son sein (160A ; 160B). L'invention permet de limiter une dégradation de faisceau lors de la traversée de la fenêtre d'entrée et/ou sortie (140A ; 140B). Elle trouve des applications particulièrement avantageuses dans le domaine des systèmes d'amplification laser. Element (100) of an optical system comprising: - a first enclosure (110), intended to receive a functional fluid (120) in circulation; and - at least one entry and / or exit window (140A; 140B), located on the first enclosure and capable of letting a light beam (131) pass. The entry and / or exit window (140A; 140B) comprises two portholes (142A, 141A; 142B, 141B) which delimit an intermediate cavity (143A; 143B), adjacent to the first enclosure. The intermediate cavity (143A; 143B) is intended to receive a second fluid, of predetermined optical index, and is provided with a device for adjusting the pressure therein (160A; 160B). The invention makes it possible to limit beam degradation when passing through the entry and / or exit window (140A; 140B). It finds particularly advantageous applications in the field of laser amplification systems.

Air cooled carbon dioxide laser

二氧化碳波导激光器包括细长的谐振器单元和细长的供电单元。谐振器和供电单元被包括多个纵向延伸、间隔开的鳍部的冷却单元分隔开，并且风扇布置为通过鳍部之间的空间驱动空气。

Laser thermal management systems and methods

A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reservoir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the cooled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

Laser device

A laser device includes a first laser medium and a second laser medium that have a first surface and a second surface opposite to the first surface, and receive input of excitation light and seed light from the first surface side to amplify the seed light, a holder that holds the first laser medium and the second laser medium; and a pair of cooling units that cool the first laser medium and the second laser medium according to change in volume of a refrigerant.

Replaceable laser unit and array thereof

一种可更换式激光器单元及其阵列，由统一外形、统一光学接口的机匣和机箱构成。机匣采用带有锥形空腔和柱形空腔的光学接口使得机匣的激光输出与机箱的光纤输出在没有专业工具的情况下实现精准的机械式对接，并利于机匣激光器元件的输出元件标准化；且带有倾斜角度的上下型导轨能够实现机匣与机箱的精密定位。当更换不同波长的激光器元件时，只需替换机箱内的机匣即可，将不同波长激光器元件的切换，替代为机匣的切换，大幅降低了医护人员进行激光波长切换的难度，提高了激光治疗仪器在医疗领域中的推广率。本发明可更换式激光器阵列，每个机箱内均可更换不同波长的机匣，多个机箱后面可连接多种波长切换器，实现波长的选择输出。

Laser oscillation device

A laser oscillation device, comprising an optical crystal, wherein an end surface of the optical crystal where a laser beam enters is cooled down by a gas.

Conduction cooled solid state laser

The exterior surfaces of a laser rod and pump lamp are covered with a highly reflective metal foil to prevent light leakage from the rod and lamp. The laser rod and pump lamp operate within a cavity inside a heat sink. Between the metal foil and the housing is a thermally conductive fluidic material selected to provide a tailored thermal impedance between the heat sink and the rod and pump to optimize the steady state temperatures of these components. The conductive fluid is not circulated but is contained to act as a simple heat conductor. The optically reflective and the heat transfer functions of the laser pumping operation are essentially separate from each other, enabling selection of materials for these respective functions to enhance performance of the laser and substantially simplify its construction.

Laser pump cavity

A laser pump includes a pump housing defining a pump cavity. The pump cavity includes reflecting walls having two or more sections, which in combination, encircle the laser element of the laser. The two or more sections have centers which are off-set from each other and which may be of different radii or height. The longitudinal axes of the segments are parallel to the center of the laser element, and the center of one of the segments may be coaxial with the axis of the laser element. Pump light enters the pump cavity through one or more openings in the housing into the cavity and is reflected many times by the reflecting surfaces of the cavity, passing many times in various directions through various parts of the laser element, resulting in efficient and uniform pumping of the laser element.

Laser spectral engineering for lithographic processing

Solid state laser system

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Laser devices utilizing alexandrite laser operating at or near its gain peak as shorter-wavelength pumping sources and methods of use thereof

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency.

Laser wavelength control unit with piezoelectric driver

An electric discharge laser with fast wavelength correction. Fast wavelength correction equipment includes at least one piezoelectric drive and a fast wavelength measurement system and fast feedback response times. In a preferred embodiment, equipment is provided to control wavelength on a slow time frame of several milliseconds, on a intermediate time from of about one to three millisecond and on a very fast time frame of a few microseconds. Techniques include a combination of a relatively slow stepper motor and a very fast piezoelectric driver for tuning the laser wavelength using a tuning mirror. A preferred control technique is described (utilizing a very fast wavelength monitor) to provide the slow and intermediate wavelength control and a piezoelectric load cell in combination with the piezoelectric driver to provide the very fast (few microseconds) wavelength control.

A kind of system and method for cooling superelevation heat flow density heat source

本发明公开了一种冷却超高热流密度热源的系统，包括热沉基底以及冷却模块，所述冷却模块包括：冷却室，内部安装有所述热沉基底；雾化喷嘴，安装在所述冷却室内，喷头朝向所述热沉基底的待冷却表面；储液罐，装有冷却液；水泵，将储液罐内的冷却液输送至雾化喷嘴；真空泵，连接所述冷却室；压力传感器，监测所述冷却室内的压力；温度传感器，监测所述热沉基底的温度；控制单元，控制所述真空泵调节所述冷却室内的压力以及抽出所述真空泵内的冷却液至储液罐，控制所述雾化喷嘴工作；本发明还公开了一种冷却超高热流密度热源的方法；本发明的系统和方法针对超高热流密度热源能够实现400～600W/cm 2 的散热能力，且结构紧凑、质量小。

Multi-element monolithic solid state laser

A monolithic solid state laser structure is used to construct erbium lasers that are insensitive to external pressure changes and vibrations, and have improved cooling of the gain medium and reduced thermal lensing effect. In the monolithic laser structure, the gain medium is separated from an optically transmissive plate on one side and a wave plate on the other side by spacers to form narrow air gaps which provide effective cooling of the gain medium and reduced the thermal lensing effect. Such an arrangement is further combined with a pressure-insensitive Brewster polarizer, such as a solid Brewster polarizer or a pressure-sealed Brewster plate, to form a pressure-insensitive laser cavity. The wave plate cooperates with the Brewster polarizer to select the wavelength of the solid state laser.

Laser wavelength control unit with piezoelectric driver

An electric discharge laser with fast wavelength correction. Fast wavelength correction equipment includes at least one piezoelectric drive and a fast wavelength measurement system and fast feedback response times. In a preferred embodiment, equipment is provided to control wavelength on a slow time frame of several milliseconds, on a intermediate time from of about one to three millisecond and on a very fast time frame of a few microseconds. Techniques include a combination of a relatively slow stepper motor and a very fast piezoelectric driver for tuning the laser wavelength using a tuning mirror. A preferred control technique is described (utilizing a very fast wavelength monitor) to provide the slow and intermediate wavelength control and a piezoelectric load cell in combination with the piezoelectric driver to provide the very fast (few microseconds) wavelength control.

Laser devices utilizing alexandrite laser operating at or near its gain peak as shorter-wavelength pumping sources and methods of use thereof

In some embodiments, the instant invention provides for a system that includes at least the following components: (i) an Alexandrite laser pumping subsystem; where the Alexandrite laser pumping subsystem is configured to: 1) produce wavelengths between 700 and 820 nm, and 2) produce a pump pulse having: i) a duration between 1 to 10 milliseconds, and ii) an energy measuring up to 100 Joules; where the Alexandrite laser pumping subsystem includes: 1) an optical fiber, and 2) a Lens system, (ii) a Thulium doped Yttrium Aluminum Garnet (Tm:YAG) laser subsystem; where the Tm:YAG laser subsystem includes: 1) a Tm:YAG gain medium, 2) a rod heat sink, and 3) at least one cooling device, (iii) a wavelength selecting device, where the wavelength selecting device is configured to deliver a wavelength between 1.75 microns to 2.1 microns; and where the system is configured to produce a high energy conversion efficiency.

Portable laser device

Un dispositivo láser portátil que comprende: una cubierta alargada de mano (312) formada con un espacio interior sustancialmente hueco y que se extiende entre sus extremos delantero (314) y trasero (316); un emisor láser (311) formado por al menos una lámpara de excitación (320) y una barra de láser (318) espaciadas una de otra; caracterizado por que el dispositivo comprende una zona de baja presión (335) formada dentro de dicho espacio interior para facilitar la formación de una corriente de refrigerante gaseoso en el interior, configurada de tal forma que dicha corriente de refrigerante gaseoso atraviesa longitudinalmente dicho espacio interior a lo largo de dicho emisor láser dispuesto dentro de dicha corriente de refrigerante gaseoso para eliminar el calor de ella. A portable laser device comprising: an elongated handheld cover (312) formed with a substantially hollow interior space and extending between its front (314) and rear (316) ends; a laser emitter (311) formed by at least one excitation lamp (320) and a laser bar (318) spaced apart from each other; characterized in that the device comprises a low pressure zone (335) formed within said interior space to facilitate the formation of a gaseous refrigerant stream inside, configured such that said gaseous refrigerant stream longitudinally crosses said interior space to along said laser emitter disposed within said gaseous refrigerant stream to remove heat from it.

Fibre laser oscillator

本发明提供一种光纤激光振荡器以及在光纤激光振荡器可装载的净化台，能够防止粉尘的侵入以及湿气导致的光学部件的故障，并能够良好地进行光学单元的维护更换以及更换后的确认作业等。光纤激光振荡器(10)具备能够拉出光学单元(12)地收纳光学单元的箱体(11)、在光学单元(12)侧自由拆装，并在从箱体(11)拉出的光学单元(12)的上方形成与外部隔绝的封闭空间的净化台(20)，在净化台(20)形成与箱体(11)的内部空间(31)相连通的连通口(22)。

Laser thermal management systems and methods

A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reservoir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the cooled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

Laser processing machine

Provided is a laser processing machine having a Peltier refrigeration element for cooling a cooling medium of a laser oscillator in a body of a small household laser processing machine. A laser processing machine 1 includes a device body 10 , a laser oscillator 71 received in the device body 10 , a cooling medium flow path provided in the device body 10 for allowing a cooling medium of the laser oscillator 71 to flow, and a cooling device 45 provided with a Peltier refrigeration element for refrigerating the cooling medium flowing in the cooling flow path. A cooling fin 621 for discharging heat generated by the Peltier refrigeration element is connected to the cooling device 45 . The cooling fin 621 is installed directly upstream of an airflow direction of an air outlet 121 for discharging air in the device body 10 out of the device body 10.

Method and system for compact efficient laser architecture

엔클로저를 구비한 레이저 증폭기 모듈은 입력 윈도우, 제1 평면에 배치되고, 상기 입력 윈도우에 광학적으로 연결된 미러, 및 상기 엔클로저의 제1 단부 가까이에 광 증폭 경로를 따라서 배치된 제1 증폭기 헤드를 포함한다. 상기 레이저 증폭기 모듈은 또한, 상기 엔클로저의 제2 단부 가까이에 상기 광 증폭 경로를 따라서 배치된 제2 증폭기 헤드 및 상기 광 증폭 경로를 따라 배치된 캐비티 미러를 포함한다. A laser amplifier module with an enclosure includes an input window, a mirror disposed in a first plane and optically coupled to the input window, and a first amplifier head disposed along the optical amplification path near the first end of the enclosure . The laser amplifier module also includes a second amplifier head disposed along the optical amplification path near the second end of the enclosure and a cavity mirror disposed along the optical amplification path.

Prevent condensation laser's circulating water cooling plant

本发明公开了一种防凝露激光器的循环水冷装置，属于激光器技术领域，本发明第一吸热板和第二吸热板采用矿棉板，具有良好的吸热性，对内部设备所产生热量进行吸收，便于后续水冷降温，第一吸热板和第二吸热板相对面通过若干个第一吸热槽和第二吸热槽，在吸热过程中，使吸收的热量分布均匀，利于提高后续冷却效率，通过第一蛇形管和第二蛇形管分别与第一吸热板和第二吸热板接触，利用水循环对其进行降温，通过驱动引风扇，对激光器内外进行换气，搭配水冷却，提高降温速度，同时可将水冷却产生的雾气排出，避免内部设备凝露，整体结构合理，防凝露性高，降温效率快，大大的提高了激光器使用寿命和使用性能等特点。

Solid state laser with beam path conditioning

A solid state laser system having at least one gas injector is disclosed. The gas injector may be configured to so as cause gas flow in a path of the laser beam in order to mitigate distortion of the laser beam due to optical path difference. Each gas injector may be configured so as to cause gas flow proximate at least one optical surface of a solid state gain element of the laser beam system. In this manner gain uniformity may be enhanced so as to facilitate use of the laser system in a variety of military and commercial applications.

Laser device

在激光器装置中,抑制在产生冷却用气流的部分产生的振动传递到激光器部，并且高效地对从激光器部产生的热进行散热。激光器部(13)容纳于包含多个面的箱状的壳体的内部。框架(33)在壳体的内部经由第1底座(40)支承激光器部(35)。框架(33)具有从一个面侧向另一面侧贯穿的贯穿孔。送风风扇(39)产生用于冷却激光器部(35)的冷却用气体流。送风风扇(39)与激光器部(35)对置并安装于例如在第2壳体(32)。冷却用气体在送风风扇(39)与激光器部(35)之间通过框架(33)的贯穿孔而移动。

Packaging structure and packaging module

本申请提供一种封装结构和封装模块，用于封装光纤光栅并对光纤光栅进行散热，光纤光栅包括依次连接的光纤入射端、栅区和光纤出射端；包括：热沉主体和容置通道；热沉主体围合形成容置通道；容置通道用于容纳光纤光栅以贯穿容置通道的方式设置；容置通道包括依次连通的第一通道、容置空间和第二通道；容置空间用于容纳栅区设置；第一通道用于容纳光纤入射端以贯穿第一通道的方式设置；第二通道用于容纳光纤出射端以贯穿第二通道的方式设置；其中，在栅区设置于容置空间时，栅区与容置空间的壁面间隔设置。本申请能够避免发生光纤光栅作为光学器件工作时因栅区接触外界物体而引起的过热烧断现象。

Laser marking system

一种用于对产品进行打标的激光打标系统，包括用于提供激光束的激光源、用于将激光束投射到产品上的打标头、包括提取装置和用于控制激光源和打标头的控制器的壳体，该提取装置被配置成产生提取流体流，该提取流体流用于提取由激光束与产品之间的相互作用产生的物质。激光打标系统还包括将壳体连接到打标头的脐带缆组件。

Laser light source apparatus

A laser light source apparatus includes a laser light source; a heat exchanger that includes a plurality of cooling fins and that cools the laser light source; a driving circuit that drives the laser light source; a housing including an intake port and an exhaust port; and an air-cooling fan that is attached to the housing and that discharges air taken in from the intake port to the exhaust port. The cooling fins are arranged at a position opposed to the intake port to be stacked up on each other at predetermined intervals and a pitch between the cooling fins is equal to or less than a minimum width of the intake port.

Rod lasers

Atoms in a neodymium:glass rod 20 are excited to a substantially spatially uniform metastable state by flashlamps 21. A flowing fluid 26 cools the flashlamps, but not the rod; so that low temperature gradients are maintained in the rod during isothermal laser operation. Automatic control means 22 turn off the electrical power supply 24 when the temperature in the rod reaches a predetermined limit. A flowing fluid 23 then cools the rod, at a rate low enough to avoid thermal stress therein, while it is not lasing. Segments of reflectors 25 focus the pump photons in the rod so as to substantially balance the cylindrical lensing action of the rod against the radial attenuation through it, and thus to provide substantially uniform density of stored energy in the rod.

Purge monitoring system for gas discharge laser

A laser component purge system for discharge lasers. The LNP (2), the output coupler and the wavemeter (14) are contained in sealed chambers each having a purge inlet port and a purge outlet port. Purge gas such as N2 is directed to each of the inlet ports. A purge monitoring system (17) is provided which monitors the purge flow and provides one or more signals to a processor which is programmed to minimize laser timeouts attributable to purge conditions without endangering the purged optical components. In a preferred embodiment, gas exiting the outlet ports are directed to flow monitors which provide the one or more signals to the processor. Purge gas may be exhausted or recirculated.

Patent FR2150616B1

Laser equipment

【課題】レーザ装置において、冷却用気流を発生させる部分において発生する振動のレーザ部に対する伝達を抑制し、かつレーザ部から発生する熱を効率的に放熱する。 【解決手段】レーザ部（１３）は、複数の面を含む箱状の筐体の内部に収容される。フレーム（３３）は、筐体の内部でレーザ部（３５）を第１のマウント（４０）を介して支持する。フレーム（３３）は、一方の面側から他方の面側に貫通する貫通孔を有している。送風ファン（３９）は、レーザ部（３５）を冷却するための冷却用気体の流れを生じさせる。送風ファン（３９）は、例えば第２の筐体（３２）に、レーザ部（３５）と対向して取り付けられる。冷却用気体は、送風ファン（３９）とレーザ部（３５）との間でフレーム（３３）の貫通孔を通じて移動する。 【選択図】図２ In a laser apparatus, transmission of vibration generated in a portion that generates a cooling airflow to a laser unit is suppressed, and heat generated from the laser unit is efficiently radiated. A laser unit (13) is housed in a box-shaped housing including a plurality of surfaces. The frame (33) supports the laser unit (35) via the first mount (40) inside the housing. The frame (33) has a through-hole penetrating from one surface side to the other surface side. The blower fan (39) generates a flow of cooling gas for cooling the laser unit (35). The blower fan (39) is attached to, for example, the second casing (32) so as to face the laser unit (35). The cooling gas moves through the through hole of the frame (33) between the blower fan (39) and the laser part (35). [Selection] Figure 2

Laser diode-pumped solid-state laser module