Dauerstrich- und Ultrakurzplus-Polymerlaser

Dauerstrich-Laser a) mit einem Laser-Resonator; b) mit einer Schicht (LD) eines organischen Festkörpers als aktives Medium des Lasers, das mindestens teilweise im Laser-Resonator positioniert ist; c) mit einer Dauerstrich-Pumplichtquelle (PL), deren Strahlung zur Erzeugung einer Besetzungsinversion in das aktive Medium (LD) fokussiert wird; und d) mit einer Einrichtung (M) zum Rotieren des aktiven Mediums (LD) in der Ebene der Schicht und zum Verfahren senkrecht zur Achse der Rotation; e) wobei die Rotationsgeschwindigkeit derart gewählt ist, dass der Laser im Dauerstrichbetrieb kohärente Strahlung aussendet; f) wobei das aktive Medium (LD) gegen die optische Achse des Laser-Resonators im Brewster-Winkel verkippt ist; g) wobei der Laser-Resonator derart ausgebildet ist, dass er eine gefaltete Konfiguration mit einem Kompensationswinkel (Θ) aufweist; h) wobei die Dicke des aktiven Mediums (LD) höchstens 200 μm, vorzugsweise höchstens 100 μm, vorzugsweise höchstens 50 μm beträgt; i) wobei ...

Vollpolymere Mikroresonatoren

Die vorliegende Erfindung betrifft einen Mikroresonator, insbesondere einen vollpolymeren Mikroresonator, ein Verfahren zur Herstellung des Mikroresonators und die Verwendung des Mikroresonators als Mikrolaser und/oder molekularer Sensor.

Doping

DYE IMPREGNATED PLASTICS FOR LASER APPLICATIONS AND THEIR PREPARATION

PRODUCTION OF PHOTON ATOMS

PROCEDURE FOR THE DOPING OF POLYMERS

Optical sources having a strongly scattering gain medium providing laser-like action

Thin-film large-area coherent light source, filter and amplifier apparatus and method

CHIRAL LASER APPARATUS AND METHOD

A chiral laser apparatus (10) comprises a layered structure configured to produce a photonic stop band, the layered structure including an upper chiral material layer (14), a middle excitable light-emitting layer (12), and a lower chiral material layer (16) and an excitation source (22) that, when applied to the layered structure, causes the middle light-emitting layer (12) to emit electromagnetic radiation, such that polarized lasing at a lasing wavelength occurs in a direction perpendicular to the layered structure. The middle light- emitting layer (12) may be configured to produce a defect such that lasing advantageously occurs at a wavelength corresponding to a localized photonic state within the photonic stop band. The excitation source (22) may be an electrical power source connected to the layered structure via two or more electrodes (18, 20).

DIELECTRIC RING LASERS

SOLID STATE DYE LASER

A solid state dye laser (5) is adapted for use in a solid state dye laser assembly having a pump (2) adapted to emit light at a first frequency and intensity. The solid state dye laser (5) includes an elongated web of polymeric host material having a gain medium disposed therein, the gain medium being in a substantially solid state and doped with a fluorescent dye adapted to emit light within a predetermined spectral tuning range. The gain medium includes polymeric cholesteric liquid crystal disposed in a planar texture and frozen into a characteristic wavelength. The solid state dye laser (5) including the gain medium is adapted for convenient movement relative to the pump (2).

OPTICAL SOURCES HAVING A STRONGLY SCATTERING GAIN MEDIUM PROVIDING LASER-LIKE ACTION

A gain medium is comprised of a multi-phase system wherein: a first phase is an electromagnetic radiation emission phase; a second phase is an electromagnetic radiation scattering phase; and a third phase is a transpare nt matrix phase. By example, the emission phase may consist of dye molecules, t he scattering phase may consist of high contrast particles, and the matrix phas e may consist of a solvent such as methanol. In some embodiments of this invention the emission and scattering phases may be the same phase, as when semiconductor particles are employed. A smallest dimension of a body compris ed of the gain medium may be less than a scattering length associated with the scattering phase. It is shown that nearly thresholdless laser behavior is observed in strongly scattering optically pumped dye-methanol solutions containing colloidal TiO2 or Al2O3 ruby nanoparticles. The emission from the high gain colloid exhibits a slope change in the linear input-output characteristics above a ...

MICROFINE LIGHT SOURCE

A microfine light source characterized by irradiating laser to non-spherical particulates in which laser dye is doped to induce light emission. A micro memory sensor making use of the light confinement of these non-spherical particulates. It becomes possible to form a microfine light source which is applicable to a new physical and chemical process, the process and modification of particulates and which also permits the new development of photon STM.

Incoherent light-emitting device apparatus for driving vertical laser cavity

AN ORGANIC LASER SYSTEM AND METHOD FOR MODIFYING THE TRANSMISSION WAVELENGTH OF THE LASER SYSTEM

POLYMER COMPOSITION COMPRISING A CONJUGATED POLYMER DOPED

(a) 공액 폴리머 또는 공액 폴리머의 전구체와, 제2폴리머를 함유하는 용액에 대해, 상기 공액 폴리머, 상기 전구체 또는 상기 제2폴리머에 결합가능한 도펀트 부분(moiety)을 갖는 도핑제를 첨가하는 공정과, (b) 상기 도펀트 부분을 상기 공액 폴리머, 상기 전구체 또는 상기 제2폴리머에 결합시킴으로써 공액 폴리머에 도핑을 실시하는 공정을 포함하여 이루어지는, 도펀트에 의해 도핑된 공액 폴리머의 제조 방법으로서, 여기서 상기 공정 (a)에서, 공액 폴리머를 완전히 도핑시키는데 필요한 양보다 적은 양으로 도핑제를 첨가시킴을 특징으로 하는, 도핑된 공액 폴리머의 제조 방법. (a) adding a dopant having a dopant moiety bondable to the conjugated polymer, the precursor or the second polymer, to a solution containing the conjugated polymer or the precursor of the conjugated polymer and the second polymer; and (b) doping the conjugated polymer by binding the dopant portion to the conjugated polymer, the precursor, or the second polymer, wherein the process comprises: In (a), the dopant is added in an amount less than necessary to completely doped the conjugated polymer. 폴리머의 도핑 방법 Doping Method of Polymer

ORGANIC THIN FILM LASER WITH TUNEABLE BRAGG REFLECTOR

A thin film laser is provided in which a peak wavelength of the thin film laser can be film laser dynamically tuned by applying a colloidal array reflector on a gain material, such as material doped with a laser dye. The dye-doped gain material is disposed on an optically reflective substrate to form the thin film laser. An excitation source optically pumps a laser light at the thin film laser, and the laser light is reflected by the optically reflective substrate. The laser light reverses direction and provides optical feedback to achieve lasing of the dye.

CONTINUOUS-WAVE SOLID-STATE LASER COMPRISING A DYE IN A THIN ROTATING LAYER

Disclosed is a laser comprising a thin polymer dye layer as an active medium. Said layer is placed in a sandwich structure between two CD blanks or DVD blanks, whereby a laser disk (LD) is created. The inventive laser comprises a folded laser resonator and is pumped by a continuous-wave pump light source (PL). The laser disk is tilted at the Brewster angle towards the optical axis of the laser resonator. The laser disk is rotated quickly with the aid of a motor (M) in order to convey all unwanted photoproducts of the dyes as well as dyes that are in long-lived, inactive states out of the inversion volume of the active medium so as to maintain the laser activity, thus allowing the laser to be operated in a continuous-wave mode. The disclosed laser is configured as a continuous-wave solid-state dye laser which can be continuously adjusted across a wide range by means of a double-refractive crystal (BRF).

Incoherent light-emitting device apparatus for driving vertical laser cavity

A laser emitting apparatus includes an incoherent light-emitting device having a light-emitting layer wherein an electric field is applied across the light-emitting layer to produce light which is transmitted out of the incoherent light-emitting device and a vertical laser cavity structure disposed to receive light transmitted from the incoherent light-emitting device and produce laser light.

Tin-phosphorus oxyfluoride glass containing aromatic organic compound

A tin-phosphorous oxyfluoride glass in the Sn-P-O-F composition field is used as a supporting matrix for light-responsive polycyclic aromatic hydrocarbons, such as triplet state or lasing dyes. Dye compatibility with the glass is good, as evidenced by the fact that glasses containing the dyes exhibit luminescence characteristic of the dissolved dye in a rigid solvent.

Method for forming microilluminants

A method for forming microilluminants, which comprises the steps of irradiating laser beam to microparticles doped with a laser pigment in a liquid medium, trapping the microparticles and causing these microparticles to emit light. According to this method, it is possible to form microilluminants, permitting application to new physical and chemical processes and to processing and modification of microparticles, and new developments such as optical STM.

Synthesis of solid state dye laser by y-irradiation polymerization method

A Solid state dye laser (SSDL) mixture of rhodamine B (RB) dissolved in ethylene glycol (EG) and added in a 2-hydroxyethyl-methacrylate (HEMA) methyl-methacrylate (MMA) copolymerized by gamma irradiation polymerization method (GIPM).

Organic semiconductor laser and method for producing it

An organic semiconductor laser, which is produced integrally with an electrically operable inorganic LED ( 1 ), and also the method for producing said laser.

OPTICAL DEVICES

An optical device having a layer comprising an organic material that includes a substantially uniform dispersion of light transmissive nanoparticles.

Verfahren zur Identifizierung eines Objektes und ein Objekt, das durch ein solches Verfahren identifizierbar ist

Verfahren zur Herstellung von Mikroleuchtkörpern

LASER APPARATUS

Laser apparatus

Laser apparatus includes an active medium 9, the constituents of which are substantially fixed relative to each other. Optical pumping energy 11 is supplied by another laser 10 to the active medium 9 which is arranged to move relative to the location at which the pumping energy 11 is supplied. Thus where absorbing states are formed within the active medium, they can be removed from the pumping region at which the energy 11 is supplied and substituted with ground state molecules. Use of the active medium 9 in which its constituents are substantially fixed relative to each other, enables control over its movement to be improved over that which would be possible were it in a liquid state. ...

Lasers

DYE LASERS

A dye laser comprises a solid member having a dye chemically-bonded to a polymer, eg. PMMA, (eg dye content up to 50% by wt.). Members may be assembled together in a magazine such as belt 16, alternative magazines being disclosed (figs 2, 4, 5); different types of dye carrying members may be provided. The member may have integral optical features such as a mirror, lens (30), or diffraction grating. ...

PROCEDURE FOR THE DOPING OF A POLYMER

POLYMERI OPTICAL FIBER AMPLIFIER

Optical amplification in miniaturized polymer cavity resonators

METHOD FOR PRODUCING AND OPERATING A SOLID POLYMER LASER MEDIUM AND ARRANGEMENT FOR THE IMPLEMENTATION THEREOF IN A LIGHT AMPLIFICATION STRUCTURE

TIN-PHOSPHORUS OXYFLUORIDE GLASS CONTAINING AROMATIC ORGANIC COMPOUND

STIMULATED EMISSION LUMINESCENT LIGHT-GUIDE SOLAR CONCENTRATORS

A solar concentrator comprising: A luminescent layer having luminescent particles capable of becoming excited by absorbing solar light of a first absorption frequency and, once excited, being capable of being stimulated to emit luminescent light at a first emission frequency. A light source for generating a pump light of the first emission frequency for stimulating the excited luminescent particles having absorbed solar light such that when the pump light traveling in a direction of travel stimulates the luminescent particles having absorbed solar light at the first absorption frequency the luminescent particles emit luminescent light at the first emission frequency in the direction of travel of the pump light, intensifying the pump light. A light guide adjacent to and optically coupled with the luminescent layer, the light-guide for assisting in guiding the intensified pump light via total internal reflection to a light collection area.

MONOCHROMATIC SOURCE INCLUDING/UNDERSTANDING A OPTICALLY ACTIVE MATERIAL

LASER PLASMONIQUE AND ITS MANUFACTORING PROCESS.

THIN FILM RING LASERS

Method For Doping A Polymer

A method for forming a conjugated polymer which is doped by a dopant includes the steps of (a) adding a doping agent comprising a dopant moiety to a solution containing the conjugated polymer or a precursor thereof and, optionally, a second polymer, the dopant moiety being capable of bonding to the conjugated polymer, precursor thereof or the second polymer; (b) allowing the dopant moiety to bond to the conjugated polymer, precursor thereof or the second polymer to perform doping of the conjugated polymer, wherein the amount of doping agent added in step (a) is less than the amount required to form a fully doped conjugated polymer.

Multiwavelength laser for illumination of photo-dynamic therapy drugs

An apparatus and method are provided for converting a pump laser beam having a first wavelength to an output beam of a second wavelength. The wavelength conversion device includes a solid medium impregnated with dye laser which is rotated at a speed which is slow enough to allow the dye material to lase and fast enough to reduce thermally induced optical aberrations and triplet state absorption. The medium and method provide a variety of output laser wavelengths suitable for treating diseases of the eye. In the preferred embodiment, the medium has the dimensions of a standard compact disk.

ПОЛИМЕРНЫЕ НАНОЧАСТИЦЫ, СОДЕРЖАЩИЕ СРЕДУ ДЛЯ ПРЕОБРАЗОВАНИЯ ФОТОНОВ С ПОВЫШЕНИЕМ ЧАСТОТЫ

... 1. Полимерные наночастицы, содержащие среду для преобразования фотонов с повышением частоты, и стабилизирующий агент, причем указанная среда содержит по меньшей мере два компонента и компонент полимерной органической матрицы, указанный компонент полимерной органической матрицы образует полимерную матрицу, и в этой полимерной матрице распределены указанные по меньшей мере два компонента, причем первый компонент из указанных по меньшей мере двух компонентов способен поглощать свет первой длины волны в диапазоне w≤λ1≤х, при этом первый компонент действует как сенсибилизатор в указанной среде, и где второй компонент из указанных по меньшей мере двух компонентов способен эмитировать свет второй длины волны в диапазоне y≤λ2≤z, при этом второй компонент действует как эмитирующий компонент в указанной среде, где λ2≤λ1, и где, при поглощении света указанным первым компонентом при первой длине волны в диапазоне w≤λ1≤х, указанный эмитирующий компонент эмитирует излучение при второй длине волны в диапазоне ...

PUMPLICHTQUELLE FÜR LASER

Dauerstrich-Polymerlaser

Der Laser hat eine Farbstoff-Polymerschicht als aktives Medium. Diese befindet sich in einer Sandwich-Konstruktion zwischen zwei CD- oder DVD-Rohlingen, wodurch eine Laserdisk (LD) gebildet wird. Der Laser wird von einer Dauerstrich-Pumplichtquelle (PL) gepumpt. Die Laserdisk wird mit Hilfe eines Motors schnell rotiert, um alle störenden Photoprodukte der Farbstoffe sowie Farbstoffe in langlebigen, inaktiven Zuständen aus dem Inversionsvolumen des aktiven Mediums weg zu transportieren, damit die Laseraktivität erhalten bleibt. Dadurch ist ein Dauerstrichbetrieb des Lasers möglich. Der Laser ist ein Dauerstrich-Festkörper-Farbstofflaser, der kontinuierlich über einen weiten Bereich abgestimmt werden kann.

A method of manufacturing solid state dye lasers

PROCEDURE FOR THE DOPING OF POLYMERS

A method for laser projection of images and a laser projector

TIN-PHOSPHORUS OXYFLUORIDE GLASS CONTAINING AROMATIC ORGANIC COMPOUND

A tin-phosphorous oxyfluoride glass in the Sn - P - O - F composition field is used as a supporting matrix for lightresponsive polycyclic aromatic hydrocarbons, such as triplet state or lasing dyes. Dye compatibility with the glass is good, as evidenced by the fact that glasses containing the dyes exhibit luminescence characteristic of the dissolved dye in a rigid solvent.

METHOD FOR FORMING MICROILLUMINANTS

A method for forming microilluminants, which comprises the steps of irradiating laser beam to microparticles doped with a laser pigment in a liquid medium, trapping the microparticles and causing these microparticles to emit light. According to this method, it is possible to form microilluminants, permitting application to new physical and chemical processes and to processing and modification of microparticles, and new developments such as optical STM.

POLYMER OPTICAL FIBER AMPLIFIER

PLASTIC CONTAINING A DYE FOR LASER AND ITS METHOD FOR REALIZATION

OPTOELECTRONIC DEVICES, METHODS OF FABRICATION THEREOF AND MATERIALS THEREFOR

An optoelectronic signal translating device having a region containing rare earth or transition metal ions for generation of radiation of a predetermined wavelength. Said region includes an organic complex comprising a ligand adapted to enhance the emission of radiation and a chromophore separately co-operable with a radiation source of wavelength not greater than that of said predetermined desired radiation. Said chromophore can be excited to cross- couple with the upper permitted energy state of said rare earth or transition metal ions, thereby generating said predetermined desired radiation by subsequent decay of said ions to the permitted lower energy state.

SYNTHESIS OF BORON DIPYRROMETHENES WITH LASER PROPERTIES

A family of 3 members of 8-alkyl boron dipyrromethenes (I, II and III) has been developed, obtained by means of Liebeskind-Srogl coupling with alkenyl boronic acids, followed by catalytic hydrogenation of the alkenyl using hydrogen on palladium, and characterised by high laser efficiency with emission in the green region of the electromagnetic radiation spectrum. These novel derivatives are characterised by a laser efficiency almost double that of other commercial dyes and a much greater photostability.

Amplification module for an optical printed circuit board and an optical printed circuit board

The invention provides an amplification module for an optical printed circuit board, the optical printed circuit board comprising plural polymer waveguide sections from independent waveguides, each of the sections being doped with an amplifying dopant, wherein the plural waveguide sections are routed so as to pass through an amplification zone in which the plural polymer waveguide sections are arranged close or adjacent to one another, the amplification module comprising: a pump source comprising plural light sources arranged to provide independently controllable levels of pump radiation to each of the plural waveguide sections. In an embodiment, the amplification module also includes plural polymer waveguide sections corresponding to the plural polymer waveguides of the printed circuit board on which in use the amplification module is to be arranged, each of the sections being doped with an amplifying dopant.

Organic semiconductor laser and method for its production

Die Erfindung betrifft einen organischen Halbleiterlaser, welcher einstückig mit einer elektrisch betreibbaren anorganischen LED (1) hergestellt ist, sowie auch das Verfahren zu dessen Herstellung.

Tin-phosphorus oxyfluoride glass containing aromatic organic compounds

A tin-phosphorous oxyfluoride glass in the Sn - P - O - F composition field is used as a supporting matrix for light-responsive polycyclic aromatic hydrocarbons, such as triplet state or lasing dyes thus providing a glass article containing at least one dissolved polycyclic aromatic hydrocarbon compound which exhibits a response to light or an electric field. Dye compatability with the glass is good, as evidenced by the fact that glasses containing the dyes exhibit luminescence characteristic of the dissolved dye in a rigid solvent. The aromatic hydrocarbon compound is present in a concentration of up to 1%.

PUMP SOURCE FOR LASERS

This invention relates to the field of lasers and in particular to the pump sources used in lasers. Many existing lasers use linear flashlamps in order to create population inversion in the gain medium of the laser. Such pump sources suffer from a number of drawbacks particularly when pumping dye lasers including explosive damage, long optical pulse length and inappropriate spectral emission. This invention provides a pump source for a laser which exploits the surface discharge phenomenon. A dielectric material (1) which is in contract with a gas (9) has electrical energy discharged across its surface in order to provide an electromagnetic emission which is then used to pump the gain medium. By varying the dielectric material or the cover gas used (amongst other variables) the surface emission can be used to pump the laser gain medium.

ПОЛИМЕРНЫЕ НАНОЧАСТИЦЫ, СОДЕРЖАЩИЕ СРЕДУ ДЛЯ ПРЕОБРАЗОВАНИЯ ФОТОНОВ С ПОВЫШЕНИЕМ ЧАСТОТЫ

FIELD: chemistry. SUBSTANCE: polymer nanoparticles contain a medium for photon up-conversion and a stabilising agent. Said medium contains a polymer matrix having two organic components distributed therein. The first component is capable of absorbing light at a first wavelength in the range w≤λ 1 ≤x and acts as a sensitiser in said medium. The second component is capable of emitting light at a second wavelength in the range y≤λ 2 ≤z, where λ 2 ≤λ 1 , and acts as an emitting component in said medium. The stabilising agent is selected from hydrophilic or amphiphilic polymers. EFFECT: polymer nanoparticles have versatility with respect to the radiation wavelengths, both incident and emitted, the size and surface properties of said nanoparticles can be controlled, thereby enabling photon up-conversion for opto-electronic devices. 15 cl, 13 dwg, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 479 616 (13) C2 (51) МПК C09K F21K H01S C09K 11/02 (2006.01) 2/00 (2006.01) 3/16 (2006.01) 11/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010121869/05, 28.05.2010 (24) Дата начала отсчета срока действия патента: 28.05.2010 (72) Автор(ы): МИТЕВА Тзенка (DE), НЕЛЛЕС Габриэль (DE) (73) Патентообладатель(и): СОНИ КОРПОРЕЙШН (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 29.05.2009 EP 09007220.8 (43) Дата публикации заявки: 10.12.2011 Бюл. № 34 2 4 7 9 6 1 6 (45) Опубликовано: 20.04.2013 Бюл. № 11 (56) Список документов, цитированных в отчете о поиске: WO 2009/061406 A1, 14.05.2009. EP 1484379 A1, 08.12.2004. JP 2009024115 A, 05.02.2009. BY 9253 C1, 30.06.2007. EA 10503 B1, 30.10.2008. RU 2275401, 27.04.2006. 2 4 7 9 6 1 6 R U (54) ПОЛИМЕРНЫЕ НАНОЧАСТИЦЫ, СОДЕРЖАЩИЕ СРЕДУ ДЛЯ ПРЕОБРАЗОВАНИЯ ФОТОНОВ С ПОВЫШЕНИЕМ ЧАСТОТЫ компонент способен эмитировать свет второй длины волны в диапазоне y≤λ2≤z, где λ2≤λ1, и действует как эмитирующий компонент в указанной среде. Стабилизирующий агент выбран из гидрофильных или ...

Способ лазерной проекции изображений и лазерный проектор

Laser

Die Erfindung betrifft einen Laser (10), zumindest umfassend – einen optischen Resonator (19) mit einer transparenten Resonatorschicht (6), die sich zwischen mindestens zwei Spiegeln (3, 11) befindet und die zur Erzeugung mindestens eines sich bei einer definierten Resonatorlänge l ausbildenden resonanten Wellenlängenbandes Δλ aus einem durch den Aufbau des Resonators (19) bestimmten Wellenlängenbereich dient, – ein laseraktives Material (18) zur Erzeugung des Wellenlängenbandes aus dem Wellenlängenspektrum, wobei sich das laseraktive Material (18) zumindest in einem Teil der Resonatorschicht (6, 4) befindet, – eine Pumpquelle zur Anregung des laseraktiven Materials (18), wobei das emittierte Wellenlängenband des Lasers (10) bei einer bestimmten Pumpleistung aus einer Überlagerung des Wellenlängenspektrums des laseraktiven Materials (18) und den resonanten Moden des Resonators (19) entsteht. Dabei ist der Resonator (19) einem Dünnschichtaktuator (14) zugeordnet und beide sind in Form eines ...

ORGANISCHE LASER

Solid-state dye laser

In a solid-state dye laser the dye is incorporated in a polymer host material. The laser has a rod (1) with a retroreflective mirror (3) in one end and a surface grating (7) at the other end. A partially transparent output mirror (11) is located close to the grating in the path of the output light beam. The rod comprises a polymeric host material, such as polymethyl methacrylate (PMMA), which is impregnated with a fluorescent dye, such as rhodamine 6G tetrafluoraborate. A number of interchangeable active components, each comprising a different polymer/dye combination, may be provided, so that the laser is easily tunable to a number of different frequencies. Pumping energy may be directed to the different combinations by a moveable mirror or prism arrangement, or by switching the energy between optical fibres. The dye may be incorporated in the host before polymerisation. The dye may be selectively bleached to produce a non-uniform gain profile. ...

Surface discharge pumped lasers

Laser device

ORGANIC LASERS

Tunable blue lasers from alloys based on organic distyryl benzenesingle crystals

Multiwavelength laser for illumination of photo-dynamic therapy drugs

Optical devices

THIN FILM RING LASERS

SOLID STATE DYE LASER

A solid state dye laser (5) is adapted for use in a solid state dye laser assembly having a pump (2) adapted to emit light at a first frequency and intensity. The solid state dye laser (5) includes an elongated web of polymeric host material having a gain medium disposed therein, the gain medium being in a substantially solid state and doped with a fluorescent dye adapted to emit light within a predetermined spectral tuning range. The gain medium includes polymeric cholesteric liquid crystal disposed in a planar texture and frozen into a characteristic wavelength. The solid state dye laser (5) including the gain medium is adapted for convenient movement relative to the pump (2).

Method for detecting presence of structure within object using strongly scattering gain medium providing laser-like action

강하게 산란하여 레이저와 같은 작용을 하는 이득 매질을 이용한 물체 내부의 구조물의 존재를 검색하는 방법에 관해 개시되어 있다. 개시된 검색 방법은 물체의 한 표면영역에 다상의 이득매질을 제공하는 단계로서, 다상 이득매질은 제1 파장과 다른 제2 파장을 가지는 파장밴드내에 속하는 파장들로 전자기 복사를 방사하는, 제1 파장을 가지는 전자기 복사에 반응하는 단계와, 상기 제1 파장을 가지는 복사의 제1 펄스로 상기 이득매질을 조사하는 단계와, 상기 물체에 상기 제2 파장을 가지는 상기 방사된 복사를 전파하는 단계와, 상기 구조물과 관련되는 굴절율의 변화와 마주치는 상기 전파복사에 반응하여 상기 전파되는 복사의 일부를 상기 물체의 표면으로 되 반사시키는 단계와, 제2 펄스와 동시에 상기 다상 이득 매질에 들어가는 상기 반사된 복사에 반응하여 상기 제2 파장을 가지는 상기 파장밴드에 속하는 파장으로 상기 전자기 복사의 방사를 강화하는 단계와, 상기 강화된 방사를 검색하는 단계 및 상기 구조물에서 상기 물체의 표면까지의 적어도 한 거리를 결정하기 위해 상기 제1 및 제2 펄스의 출현사이의 시간과 상기 검색된 강화된 방사를 서로 관련시키는 단계를 포함한다. A method of detecting the presence of a structure inside an object using a gain medium that is strongly scattered and acts like a laser is disclosed. The disclosed search method comprises providing a multiphase gain medium in one surface area of an object, wherein the multiphase gain medium emits electromagnetic radiation at wavelengths within a wavelength band having a second wavelength different from the first wavelength. Reacting to electromagnetic radiation having a wavelength, irradiating the gain medium with a first pulse of radiation having a first wavelength, propagating the radiated radiation having the second wavelength to an object; Reflecting a portion of the propagated radiation back to the surface of the object in response to the radio wave radiation encountering a change in refractive index associated with the structure, and the reflected radiation entering the polyphase gain medium simultaneously with a second pulse. Enhancing radiation of the electromagnetic radiation to a wavelength belonging to the wavelength band having the second wavelength in response to; Retrieving radiation and correlating the retrieved enhanced radiation with the time between the appearance of the first and second pulses to determine at least one distance from the structure to the surface of the object.

Method for forming microilluminants

A method for forming microilluminants, which comprises the steps of irradiating laser beam to microparticles doped with a laser pigment in a liquid medium, trapping the microparticles and causing these microparticles to emit light. According to this method, it is possible to form microilluminants, permitting application to new physical and chemical processes and to processing and modification of microparticles, and new developments such as optical STM.

CO-EXTRUDED MULTILAYER POLYMERS FILMS FOR ALL-POLYMER LASERS

A polymer film laser is provided that comprises a plurality of extruded polymer layers. The plurality of extruded polymer layers comprises a plurality of alternating dielectric layers of a first polymer material having a first refractive index and a second polymer material having second refractive index different than the first refractive index.

Boron dipyrromethenes with laser properties

A family of three 8-alkyl boron dipyrromethenes 1, 2, and 3 has been prepared. These compounds are characterized by emission in the green region of the electromagnetic radiation spectrum and exhibit an almost double laser efficiency than other commercial dyes and much greater photostability. The 8-alkyl boron dipyrromethenes are prepared by catalytic hydrogenation (reduction) of the corresponding 8-alkenyl boron dipyrromethenes, which are obtained by Liebeskind-Srogl coupling of thiomethylboron dipyrromethene with an alkenyl boronic acid.

LASER WITH AN ORGANIC EMITTER MATERIAL AND DISTRIBUTED FEEDBACK

The invention relates to a laser comprised of at least one organic emitter material which is capable of stimulated emission of light and which has a two-dimensional construction. The invention also comprises means for optically, electrically and or chemically pumping the emitter material. According to the invention, waveguide modes exist which are guided in the emitter material, and the laser structure is spatially modulated in a periodic manner. The inventive laser is characterized in that at least one surface of the emitter material is in contact with an additional layer (i.e. boundary layer).

OSCILLATION WAVELENGTH VARIABLE ORGANIC DISTRIBUTION FEEDBACK TYPE LASER

PROBLEM TO BE SOLVED: To create a high performance organic distribution feedback type laser by using the grating forming characteristics of optical inducing substance moving materials, and to realize an oscillation wavelength variable organic distribution feedback type laser by using the characteristics of azobenzene polymer capable of erasing/rewriting the grating. SOLUTION: This organic distribution feedback type laser is provided with a resonator in a double layer structure constituted of an optical inducing substance moving material layer and a dye layer in the lower layer of the material layer. This organic distribution feedback type laser is characterized in that an oscillation waveform can be made variable by changing interference exposure conditions to the optical organic substance moving materials being polymer substances having the azobenzene frame of this formula. COPYRIGHT: (C)2005,JPO&NCIPI ...

Solid state laser has a laser medium of impregnated polymer is in a form that has a transparent polymer outer layer

The stability and quality of the emission of a solid state laser is obtained using a solid polymer laser medium(1). This polymer (2) is impregnated with pigments and has a peripheral layer of a transparent polymer (3) having the same refractive index. The impregnated polymer is produced and cooled and the inserted into the outer ring to provide optimum contact.

LASERS

... 1356877 Lasers WESTERN ELECTRIC CO Inc 5 April 1972 [5 April 1971 1 June 1971 (2)] 15574/72 Heading H1C The active medium of a laser forms or is associated with, a waveguide having a dimension which is of the same order of magnitude as the wavelength of the laser output and so constructed that emission is sustained by ring-like feedback. In Fig. 1A a thin light transmitting film 11 has an annular thicker region 15 containing the active medium. The thickening increases the phase propagation constant and a feedback ring is thus formed. A broad pumping beam is coupled into the film at 14, and output is coupled from the ring at 16. The output coupler is placed very close to the ring and frustrates the guiding in the ring; this coupler may be as in Specification 1,287,035. The ring may also be formed by creating an annular region of greater optical density in the film. The possible changes in phase propagation constant or refractive index are described in Figs. 2A-2D (not shown). A special case ...

Creating photon atoms

A METHOD FOR LASER PROJECTION OF IMAGES AND A LASER PROJECTOR

Optical sources having a strongly scattering gain medium providing laser-like action

MICROFINE LIGHT SOURCE

A microfine light source characterized by irradiating laser to non-spherical particulates in which laser dye is doped to induce light emission. A micro memory sensor making use of the light confinement of these non-spherical particulates. It becomes possible to form a microfine light source which is applicable to a new physical and chemical process, the process and modification of particulates and which also permits the new development of photon STM.

COMPOSITION FOR PHOTON ENERGY UP-CONVERSION COMPRISING SENSITIZING COMPONENT AND EMITTING COMPONENT

PURPOSE: A composition/system for photon energy up-conversion is provided to allow the formation of big-sized film, thereby being useful for a broad spectrum of photoelectric apparatus the as a solar cell, a LED, a laser medium, a sensor, labels, preferably a biological/biochemical system. CONSTITUTION: The composition for photon energy up-conversion comprises at least two components, wherein a first component functioning as a sensitizer in the composition can absorb energy at a first wavelength range of w<=lambda 1<=x, and a second component functioning as an emitting component in the composition can emit energy at a second wavelength range of y<=lambda 2<=z, provided that lambda 2<=lambda 1, when the first component absorbs energy at the first wavelength range, the emitting component emits energy at the second wavelength range, and the first component and/or the second component are organic compounds. The system for photon energy up-conversion comprises the composition together with a ...

Organic solid-state laser, compound and use thereof

A compound represented by the formula (1) has excellent lasing properties. G1 and G2 are H or substituent; FL1 and FL2 are represented by the formula (2); BT is represented by the formula (4); and n1, n2 and m are 1 to 5.

A METHOD FOR LASER PROJECTION OF IMAGES AND A LASER PROJECTOR

A method for the laser projection of images includes the supply of optical pump radiation to the active element of the laser in order to generate laser radiation, the spatial modulation of the laser radiation intensity by the image being projected, and the projection of spatially modulated laser radiation on the screen. In order to improve the laser projector efficiency and the brightness of the image being projected, at a sufficiently low "black level", the spatial modulation of the laser radiation intensity is carried out by means of spatial modulation of the power of optical pump radiation being supplied on an active element of the laser. The laser projector for projecting images contains an optical pump source (1) for the pump radiation generation, a spatial light modulator (6), and a laser resonator (2) including a spectral selective element (3) for the input of pump radiation inside the resonator, an active element (5) located inside the laser resonator and means for the output of ...

ORGANIC THIN FILM LASER WITH TUNEABLE BRAGG REFLECTOR

A thin film laser is provided in which a peak wavelength of the thin film laser can be film laser dynamically tuned by applying a colloidal array reflector on a gain material, such as material doped with a laser dye. The dye-doped gain material is disposed on an optically reflective substrate to form the thin film laser. An excitation source optically pumps a laser light at the thin film laser, and the laser light is reflected by the optically reflective substrate. The laser light reverses direction and provides optical feedback to achieve lasing of the dye.

Nonlinear optical element and uses thereof

The nonlinear optical element includes a sunstrate and one or more transparent microspheres made of a nonlinear optical active substance system fixed to the substrate, or the nonlinear optical element includes one or more transparent microspheres contacting a solid medium and fixed to the substrate. The element can be used for controlling nonlinear optical characteristics such as light amplification, optical switching, injection mode locking, and coupling of whispering gallery modes.

Composition for photon-energy up-conversion

The present invention relates to a composition for photon energy up-conversion, a system comprising said composition and to uses of said composition and said system.

Optical element and process for producing the same

An optical element comprising (i) a matrix having an Si-O covalent bond unit, wherein at least part of the silicon atoms of said Si-O covalent bond unit is covalently bonded to an aliphatic hydrocarbon group containing not more than 4 carbon atoms, and (ii) at least one functional material selected from the group consisting of an organic material showing a nonlinear optical effect, a material showing a refractive index-regulating action, and an organic dye for laser oscillation, said functional material being present within said matrix. A functional group is stably held in the matrix and fully manifests its function in the matrix.

ТВЕРДОТЕЛЬНЫЙ ЛАЗЕР НА КРАСИТЕЛЕ

FIELD: laser engineering. SUBSTANCE: proposed distributed feedback solid-state dye laser incorporates amplifying medium which is, essentially, in solid state and includes fluorescent dye dope flat in its part designed to receive light from pumping device, its periodic structure varying in direction normal to mentioned flat part. Laser has locating means designed for locating and orienting amplifying medium with respect to pumping device. Amplifying medium is radiating in direction normal to mentioned flat part. Periodic structure may have plurality of stepwise disposed layers possessing optical properties periodically varying with respect to each other. Structure incorporates cholesteric liquid crystal layers. Laser may have backing in the form of tape, disk, or card. EFFECT: facilitated handling, enhanced safety in use, reduced impact of environment, eliminated possibility of laser dye photo degradation. 61 cl, 21 dwg ссбб$ сс ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 239 922 (51) МПК? (13) С2 Н 01 $ 3/46 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2000126492/28, 10.02.1999 (24) Дата начала действия патента: 10.02.199911.1-61 (30) Приоритет: 20.03.1998 Ш$ 09045307 (43) Дата публикации заявки: 10.10.2002 (45) Дата публикации: 10.11.2004 (56) Ссылки: Ц$ 3771065 А, 06.11.1973. 4$ 4523319 А, 11.06.1985. СВ 22358171 А, 13.03.1991. $ 5136005 А, 04.08.1992. КЦ 2105401 СЛ, 20.02.1998. (85) Дата перевода заявки РСТ на национальную фазу: 20.10.2000 (86) Заявка РСТ: 1$ 9902816 (10.02.1999) (87) Публикация РСТ: \М/О 99/49543 (30.09.1999) (98) Адрес для переписки: 103735, Москва, ул.Ильинка, 5/2, ООО "Союзпатент", пат.пов. В.С.Ткаченко (72) Изобретатель: ФЭН Бансен (Ц$), ФАРИС Садег Мустафа (13) (73) Патентообладатель: РИВЕО, ИНК. (ЦЗ) (74) Патентный поверенный: Ятрова Лариса Ивановна (54) ТВЕРДОТЕЛЬНЫЙ ЛАЗЕР НА КРАСИТЕЛЕ (57) Твердотельный лазер на красителе с распределенной обратной связью включает усилительную среду, ...

Maser or laser apparatus comprising spherical active material

... 1,042,312. Lasers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 11, 1963 [April 16, 1962], No. 14658/62. Heading H3B. In a laser the active material comprises an organic glass and one or more conjugated organic molecular species and is substantially spherical in shape. As shown in Fig. 1, the laser active element 11 is immersed in liquid nitrogen 12 in a quartz dewar flask 13 and is pumped by light from a krypton flash tube 14 the wavelength of which is controlled by filter 18. Since the active material is spherically shaped the stimulated radiation that escapes does so tangentially and the active material appears with a bright rim of illumination. Due to the spherical shape of the active medium the " whispering gallery " modes of the stimulated emissions are stored within the medium so that the laser operates for longer periods than normal. The elements may be formed by mixing the organic glass and the one or more conjugated organic species and then decanting drops of the mixture into ...

STIMULATED EMISSION LUMINESCENT LIGHT-GUIDE SOLAR CONCENTRATORS

A luminescent light-guide solar concentrator. The concentrator has an optically transmissive sheet that includes either a layer of luminescent particles or is impregnated with luminescent particles that absorb sunlight incident thereon from any direction. The luminescent particles re-emit light, which is trapped inside the sheet of glass and propagates inside the sheet by total internal reflection towards a photo-voltaic cell. A light source stimulates emission of light from luminescent particles.

METHOD FOR FORMING MICROILLUMINANTS

A method for forming microilluminants, which comprises the steps of irradiating laser beam to microparticles doped with a laser pigment in a liquid medium, trapping the microparticles and causing these microparticles to emit light. According to this method, it is possible to form microilluminants, permitting application to new physical and chemical processes and to processing and modification of microparticles, and new developments such as optical STM.

OPTICAL SOURCES HAVING A STRONGLY SCATTERING GAIN MEDIUM PROVIDING LASER-LIKE ACTION

A gain medium is comprised of a multi-phase system wherein: a first phase is an electromagnetic radiation emission phase; a second phase is an electromagnetic radiation scattering phase; and a third phase is a transparent matrix phase. By example, the emission phase may consist of dye molecules, the scattering phase may consist of high contrast particles, and the matrix phase may consist of a solvent such as methanol. In some embodiments of this invention the emission and scattering phases may be the same phase, as when semiconductor particles are employed. A smallest dimension of a body comprised of the gain medium may be less than a scattering length associated with the scattering phase. It is shown that nearly thresholdless laser behavior is observed in strongly scattering optically pumped dye-methanol solutions containing colloidal TiO2 or Al2O3 ruby nanoparticles. The emission from the high gain colloid exhibits a slope change in the linear input-output characteristics above a critical pump pulse energy. The change in slope is accompanied by a spectral line narrowing with a bichromatic spectrum appearing at high pump energies.

Polymeric nanoparticles comprising a medium for photon up-conversion

The present invention relates to a polymeric nanoparticle comprising a medium for photon up-conversion, and to a method of producing such polymeric nanoparticle.

Solid state dye laser

Optical sources having strongly scattering gain medium providing laser-like action

LASER PLASMONIQUE AND ITS MANUFACTORING PROCESS.

Laser plasmonique comprenant : - une nanostructure métallique (RP) supportant une pluralité de modes plasmoniques ; et - un milieu à gain (MG) présentant un gain optique à la fréquence d'oscillation d'au moins un dit mode plasmonique, couplé en champ optique proche avec ladite nanostructure ; caractérisé en ce que ledit milieu à gain est structuré à l'échelle nanométrique de manière à présenter une forme qui épouse la distribution spatiale d'intensité d'un dit mode plasmonique, à la fréquence duquel ledit milieu à gain présente un gain optique. Procédé de fabrication d'un tel laser plasmonique.

STIMULATED EMISSION LUMINESCENT LIGHT-GUIDE SOLAR CONCENTRATORS

... 본 발명의 태양 집광기는 발광층, 광원 및 도광부를 포함한다. 발광층은 제1 흡수 주파수의 태양광을 흡수함으로써 여기될 수 있고 여기되면 제1 방출 주파수로 발광성 광을 방출하도록 유도될 수 있는 발광 입자를 갖는다. 광원은 흡수된 태양광을 갖는 여기된 발광 입자를 유도하기 위해 제1 방출 주파수의 펌프광을 발생시켜서, 제1 이동 방향으로 이동하는 펌프광이 제1 흡수 주파수로 흡수된 태양광을 갖는 발광 입자를 유도할 때, 발광 입자는 펌프광의 제1 이동 방향으로 제1 방출 주파수로 발광성 광을 방출하여, 펌프광을 강화시킨다. 도광부는 발광층에 인접하여 광학적으로 커플링되고, 강화된 펌프광을 내부 전반사를 통해 집광 영역으로 안내하는 것을 보조한다.

Translucent polycrystalline material and manufacturing method thereof

Provided is a method for manufacturing a translucent polycrystalline material with optical properties continuously varying in the material. A slurry including single crystal grains that are acted upon by a force when placed in a magnetic field is immobilized in a gradient magnetic field with a spatially varying magnetic flux density and then sintered. For example, where a slurry including single crystal grains of YAG doped with Er and single crystal grains of YAG undoped with a rare earth material is immobilized in the gradient magnetic field, the region with a strong magnetic field becomes a laser oscillation region that is rich in Er-doped YAG, whereas the region with a weak magnetic field becomes a translucent region rich in YAG undoped with a rare earth material. A polycrystalline material having a core with laser oscillations and a guide surrounding the core are obtained at once.

Continuous wave directional emission liquid crystal structures and devices

A light emitting photonic bandgap (PBG) material, and devices uses the same, having (a) a polymer network exhibiting a non-uniform pitch; (b) a small molecule liquid crystal material with a birefringence >0.04; and (c) one or more light emitting dyes having a low triplet state absorption. The light emitting PBG material has a defect-induced density of states enhancing feature at a wavelength that overlaps the emission spectrum of the light emitting dye. Excitation of the light emitting PBG material by a light source causes a directional electromagnetic emission from the light emitting material. The PBG material, and device, are capable of emitting continuous wave laser light as a result of excitation by a low-power incoherent light source.

MONOLITHICALLY INTEGRATED LASER WITH LED PUMP

A laser structure includes a substrate, a buffer layer formed on the substrate and a light emitting diode (LED) formed on the buffer layer. A photonic crystal layer is formed on the LED. A monolayer semiconductor nanocavity laser is formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED, wherein the LED and the laser are formed monolithically and the LED acts as an optical pump for the laser. 1. A laser structure , comprising:a substrate;a buffer layer formed on the substrate;a light emitting diode (LED) formed on the buffer layer;a photonic crystal layer formed on the LED; anda monolayer semiconductor nanocavity laser formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED, wherein the LED and the laser are formed monolithically and the LED acts as an optical pump for the laser.2. The laser structure as recited in claim 1 , wherein the laser includes a WSelaser.3. The laser structure as recited in claim 1 , wherein the LED includes a III-V material.4. The laser structure as recited in claim 1 , wherein the photonic crystal includes SiOand the LED produces visible light.5. The laser structure as recited in claim 1 , wherein the LED achieves a threshold pump power to enable the laser to produce laser light.6. The laser structure as recited in claim 1 , wherein the LED includes a transparent substrate LED.7. The laser structure as recited in claim 1 , wherein the LED includes AlGaAs or AlGaInP material.8. The laser structure as recited in claim 1 , wherein the substrate includes one of Si or Ge and the buffer layer includes a III-V material.9. The laser structure as recited in claim 1 , wherein the substrate includes a semiconductor-on-insulator substrate.10. The laser structure as recited in claim 1 , further comprising a lens disposed between the LED and the photonic crystal layer.11. A laser structure claim 1 , comprising:a Si or Ge substrate;a III-V buffer layer ...

OPTICAL OSCILLATOR

An optical oscillator according to an embodiment includes a first reflecting portion that transmits light having a first wavelength and reflects light having a second wavelength different from the first wavelength, a second reflecting portion that forms an unstable resonator together with the first reflecting portion and reflect light having the second wavelength, a laser medium that is disposed between the first reflecting portion and the second reflecting portion and emits light having the second wavelength due to incidence of light having the first wavelength, and a saturable absorption portion disposed on a side opposite to the first reflecting portion when viewed from the laser medium in the one direction, the first reflecting portion includes an incidence surface on which light having the first wavelength is incident, on a side opposite to the laser medium, a size of the second reflecting portion is smaller than a size of the first reflecting portion when viewed in the one direction, at least a part of a surface of the saturable absorption body on the side opposite to the laser medium includes a curved region curved toward the laser medium side, and the second reflecting portion is a dielectric multilayer film provided in the curved region. 1: An optical oscillator comprising:a first reflecting portion configured to transmit light having a first wavelength and reflect light having a second wavelength different from the first wavelength;a second reflecting portion configured to form an unstable resonator together with the first reflecting portion, be disposed apart from the first reflecting portion in one direction, and reflect light having the second wavelength;a laser medium disposed between the first reflecting portion and the second reflecting portion and configured to emit light having the second wavelength due to incidence of light having the first wavelength; anda saturable absorption portion disposed on a side opposite to the first reflecting portion ...

PRINTING OF LIQUID CRYSTAL DROPLET LASER RESONATORS ON A WET POLYMER SOLUTION AND PRODUCT MADE THEREWITH

A method of manufacturing a security feature for identifying objects or documents of value. The method may include the steps of encoding information in a pattern; and ink jet printing a chiral nematic liquid crystal material from a reservoir using a print head on to a substrate in the pattern. Thus, the method forms a patterned array of chiral nematic liquid crystal material deposits. The print head, or the reservoir, or both, may be heated to a temperature above the clearing point of the chiral nematic liquid crystal material. The chiral axes of the chiral nematic liquid crystal material deposits may be aligned substantially perpendicular to the substrate such that a predetermined portion of the electromagnetic spectrum is selectively reflected over other regions of the electromagnetic spectrum by the chiral nematic liquid crystal material deposits. 1. A method of manufacturing a security feature for identifying objects or documents of value , the method comprising:encoding information in a pattern; andink jet printing a chiral nematic liquid crystal material from a reservoir using a print head on to a substrate in the pattern to form a patterned array of chiral nematic liquid crystal material deposits, wherein the print head, or the reservoir, or both, is heated to a temperature above the clearing point of the chiral nematic liquid crystal material, and wherein the chiral axes of the chiral nematic liquid crystal material deposits are aligned substantially perpendicular to the substrate such that a predetermined portion of the electromagnetic spectrum is selectively reflected over other regions of the electromagnetic spectrum by the chiral nematic liquid crystal material deposits.2. The method according to claim 1 , wherein the pattern is a two-dimensional pattern.3. The method according to claim 1 , wherein the print head is heated to a temperature above the clearing point of the chiral nematic liquid crystal material.4. The method according to claim 1 , wherein ...

Random Lasing Photo-Curable Composition for Use as Random Lasing Gain Medium

The present invention relates to a random lasing photo-curable composition () for use as random lasing gain medium comprising:—laser dye molecules ();—an optical glue () for the laser dye molecules to be suspended therein; wherein the optical glue is mercapto ester-based and comprises methacrylate and/or derivatives thereof. The present invention also relates to a random lasing system with a gain medium made of at least partially of random lasing photo-curable composition, and methods for manufacturing such random lasing system. 2. The random lasing photo-curable composition of claim 1 , wherein the optical glue further comprises methacrylate and/or derivatives thereof.3. The random lasing photo-curable composition of claim 1 , wherein the random lasing photo-curable composition comprises less than 20 wt. % of liquid crystal.4. The random lasing photo-curable composition of claim 1 , wherein the optical glue comprises at most 85 wt. % mercapto ester.5. The random lasing photo-curable composition of claim 1 , wherein the optical glue comprises at least 15 wt. % methacrylate or derivatives thereof.6. The random lasing photo-curable composition of claim 1 , wherein the methacrylate or derivatives thereof is selected from the group consisting of:tetrahydrofurfuryl methacylate.7. A random lasing system with a gain medium made at least partly from the random lasing photo-curable composition of .8. The random lasing system of claim 7 , wherein the random lasing photo-curable composition in the gain medium is in a liquid form.9. The random lasing system of claim 7 , wherein the random lasing photo-curable composition in the gain medium is in a solid form.10. The random lasing system of claim 8 , wherein the lasing photo-curable composition in the gain medium is a self-standing block or film claim 8 , or suspended objects.12. The method of claim 11 , wherein the optical glue further comprises methacrylate and/or derivatives thereof.13. The method of claim 11 , wherein the ...

LASER DEVICE, IGNITION SYSTEM, AND INTERNAL COMBUSTION ENGINE

A laser device is provided including a light source configured to emit light, a laser resonator which the light emitted from the light source enters, a first optical element configured to increase a divergence angle of the light emitted from the laser resonator, a second optical element configured to collimate the light whose divergence angle is increased by the first optical element, and a third optical element configured to collect and condense the light collimated by the second optical element. 1. A laser device comprising:a light source configured to emit light;a laser resonator which the light emitted from the light source enters;a first optical element configured to increase a divergence angle of the light emitted from the laser resonator;a second optical element configured to collimate the light whose divergence angle is increased by the first optical element; anda third optical element configured to collect and condense the light collimated by the second optical element.2. The laser device of claim 1 , wherein the first optical element is a concave lens.3. The laser device according to claim 1 , wherein the third optical element is movable in a light emitting direction.4. The laser device according to claim 1 , wherein the laser resonator is a Q-switched laser.5. The laser device according to claim 1 , further comprising: a transmission member disposed between the light source and the laser resonator to transmit the light from the light source to the laser resonator.6. The laser device according to claim 1 , wherein the light source is a surface emitting laser.7. The laser device according to claim 1 , wherein the laser resonator is ceramic.8. The laser device according to claim 1 , wherein the laser resonator is a composite crystal in which a laser medium and a saturable absorber are bonded together.9. The laser device according to claim 8 , whereinthe laser medium is a YAG crystal where Nd is doped, andthe saturable absorber is a YAG crystal where Cr is ...

Ceramic material for generating light

The invention relates to a ceramic material (14) for generating light when irradiated with radiation, wherein the ceramic material comprises a stack of layers (15, 16) having different compositions and/or different dopings. The ceramic material may be used in a spectral computed tomography (CT) detector, in order to spectrally detect x-rays, or it may be used as a ceramic gain medium of a laser such that temperature gradients and corresponding thermo-mechanical stresses within the gain medium can be reduced.

Solid state dye laser and methods for preparing the same

The invention provides a solid state dye laser and methods for preparing the solid state dye laser. The solid state dye laser includes a porous copolymer membrane of poly(vinylidenefloride-cohexafluoroproplyne (PVDF-HFP) and a laser dye. The laser dye is incorporated in pores of the copolymer membrane. The solid state dye laser is prepared using one of a phase inversion technique, a phase separation technique, and a breath figure technique.

Organic semiconductor lasers by triplet managers

A first device is provided. The device includes an organic semiconductor laser. The organic semiconductor laser further includes an optical cavity and an organic layer disposed within the optical cavity. The organic layer includes: an organic host compound; an organic emitting compound capable of fluorescent emission; and an organic dopant compound. The organic dopant compound may also be referred to herein as a “triplet manager.” The triplet energy of the organic dopant compound is lower than or equal to the triplet energy of the organic host compound. The triplet energy of the organic dopant compound is lower than or equal to the triplet energy of the organic emitting compound. The singlet energy of the organic emitting compound is lower than or equal to the singlet energy of the organic host compound.

Laser element, compound, method for producing compound and lasing sensitizer

Disclosed is a laser device containing a. compound represented by the following formula in a light-emitting layer, R 1 and R 5 each represent a substituent having a positive Hammett's σ p value, and R 2 to R 4 , and R 6 to R 15 each represent a hydrogen atom or a substituent.

ELECTROMAGNETIC GAS SPECTROMETER

Aspects of the present disclosure relate to receiving and emitting Terahertz (THz) electromagnetic radiation via one or more Josephson Junction(s) electronically coupled to an antenna structure. Aspects of the present disclosure further relate to a mechanism and methods to analyze a gas and/or identifying a gas (and/or suspension) based its electromagnetic absorption. Together, THz electromagnetic radiation may be emitted from one or more Josephson Junction emitters (transmitters), passed through a gas/suspension of interest, and non-absorbed THz electromagnetic radiation may be detected from one or more Josephson Junction detectors (receivers). 1. An electromagnetic gas spectrometer comprising:a gas absorption cell;a THz broadband emitter including a chip with one or more JJs coupled to one or more antenna structures that is used to generate radiation;a THz detector including a chip with one or more JJs coupled to one or more antenna structures that is used to measure radiation.2. The electromagnetic gas spectrometer of further comprising a cryogenics system.3. The electromagnetic gas spectrometer of wherein cryogenics system includes a cold finger that the chips are mounted on4. The electromagnetic gas spectrometer of further comprising a vacuum shroud The present invention pertains generally to transmission and reception of terahertz radiation, and is more particularly directed towards devices and systems for and methods of fluid/suspension identification based on its electromagnetic absorption.Currently, detection of trace gases from a mixture is done by a Gas Chromatography (GC) system, which separates out all the different gases in a mixture. The GC system is paired with a second detector, such as a Mass Spectrometer (MS), to allow it to identify individual gases once they are separated. The GC-MS works well but is quite bulky and takes over an hour to analyze a sample.Functionally, the GC system sends a gaseous sample into a column that is kept at low ...

Tunable laser materials comprising solid-state blended polymers

The present invention relates to a solid-state blended polymer system that has the property of tunable lasing wavelength through adjusting the blending ratio. It can be used for health monitoring, environmental monitoring sensor and tissue imaging. Current materials do not have the broad tunable range; from blue to infra-red across the optical range. By using the same two polymers, it is possible to produce laser emitting blue to red colour. It simplifies the design, eases multi-wavelength laser sensor system integration and therefore, making the production cost-effective.

Solid-state dye laser medium and process for production thereof

The challenge of providing a long-life solid-state dye laser medium is tackled. This challenge is solved by a solid-state dye laser medium comprising a polydimethylsiloxane, and a dye dissolved in the polydimethylsiloxane. The dye is preferably a pyrromethene dye.

HANDPIECE WITH A MICROCHIP LASER

A microchip laser and a handpiece including the microchip laser. The microchip laser includes a laser medium with input and output facets. The input facet is coated with a highly reflective dielectric coating at microchip laser wavelength and highly transmissive at pump wavelength. The output facet is coated with a partially reflective at microchip laser wavelength dielectric coating. A saturable absorber attached by intermolecular forces to output facet of microchip laser. A handpiece for skin treatment includes the microchip laser. 1. A microchip laser handpiece , comprising: a microchip laser located in handpiece body, which is configured to be applied to skin;', 'a fiber optics connection to a pump laser; and', 'a fractionated scanning system configured to breakdown a solid beam emitted by the microchip laser and form array of microbeam across a segment of skin;, 'a handpiece body accommodatingwherein the microchip laser generates high power picosecond short pulses of energy.2. The microchip laser handpiece of claim 1 , wherein the handpiece body is adapted to slide over the skin.3. The microchip laser handpiece of claim 1 , wherein the fractionated scanning system comprises of a pair of mirrors.4. The microchip laser handpiece of claim 1 , wherein the handpiece body further comprises a lens array configured to generate the microbeam array from the solid beam emitted by the microchip laser.5. The microchip laser handpiece of claim 4 , wherein the lens array comprises a plurality of lenslets and each lenslet receives up to 4 mJ at 1064 nm and 2 mJ at 532 nm.6. The microchip laser handpiece of claim 1 , further comprising a holographic 1-D beamsplitter configured to generate 1-D fractionated micro-dot line.7. The microchip laser handpiece of claim 6 , wherein a 2-D fractional beam pattern is generated when the handpiece is moved in a direction perpendicular to a 1-D fractionated micro-dot line.8. The microchip laser handpiece of claim 1 , wherein the handpiece ...

PLANAR WAVEGUIDE LASER PUMPING MODULE AND PLANAR WAVEGUIDE WAVELENGTH CONVERSION LASER DEVICE

A waveguide is constructed by sandwiching a transparent member () and a laser medium () between a first clad - and a second clad -. Pumping light () is made to be incident from a direction perpendicular to a direction of the optical axes of first to fourth laser oscillation light beams - to -, and to alternately propagate through the transparent member () and the laser medium () in a zigzag manner so as to pump only resonator mode regions in the laser medium (). 1. A planar waveguide laser pumping module comprising:a planar laser medium;a planar transparent member that has a refractive index equal to that of said laser medium, and that is joined to a surface of said laser medium;a first clad that has a refractive index smaller than those of said laser medium and said transparent member, and that is joined to a surface opposite to the surface of said transparent member joined to said laser medium;a second clad that has a refractive index smaller than those of said laser medium and said transparent member, that is joined to a surface opposite to the surface of said laser medium joined to said transparent member, and that sandwiches said transparent member and said laser medium between itself and said first clad; anda heat sink that is joined to said laser medium via said second clad,wherein laser oscillations occur on a plurality of optical axes which are arranged at spacings in a planar direction of said laser medium, and pumping light is incident in a direction perpendicular to the optical axes of said laser oscillations, and alternately propagates on the plurality of optical axes of said laser medium and in said transparent member between the adjacent optical axes.2. The planar waveguide laser pumping module according to claim 1 , wherein each of cross sections of said laser medium and said transparent member in a direction perpendicular to the optical axis of said laser oscillation has a trapezoidal shape.3. The planar waveguide laser pumping module according to ...

Planar waveguide

Disclosed is a planar waveguide including: a core (11) which is a flat plate through which light propagates; a cladding (12) which is a flat plate for reflecting the light in a state of being joined to an upper surface of the core (11); and a cladding (13) which is a flat plate for reflecting the light in a state of being joined to a lower surface of the core (11), in which each of the claddings (12) and (13) is a multilayer film in which multiple films made from different materials are layered. As a result, a material having a low index of refraction can be used as the material of the core (11), and the limit on materials usable as the material of the core (11) is relaxed.

FEMTOSECOND ULTRAVIOLET LASER

A method and system for generating femtosecond (fs) ultraviolet (UV) laser pulses enables stabile, robust, and optically efficient generation of third harmonic fs laser pulses using periodically-poled quasi-phase-matched crystals. The crystals have different numbers of periodically poled crystalline layers that enable a long conversion length without back-conversion and without a special phase-matching direction. The fs UV laser may have a high conversion efficiency and may be suitable for high power operation. 1. A method for generating femtosecond ultraviolet laser pulses , comprising:directing, at a nonlinear optical crystal, a first laser pulse having a fundamental wavelength in a near infrared portion of the electromagnetic spectrum, the first laser pulse having a pulse duration of less than 1000 femtoseconds;converting, at a first portion of the nonlinear optical crystal, at least some photons from the first laser pulse to a second harmonic wavelength of the fundamental wavelength to generate a second laser pulse within the nonlinear optical crystal;converting, at a second portion of the nonlinear optical crystal, at least some photons from the first laser pulse and the second laser pulse to a third harmonic wavelength of the fundamental wavelength to generate a third laser pulse within the nonlinear optical crystal; andoutputting the third laser pulse from the nonlinear optical crystal, wherein the third laser pulse has the pulse duration.2. The method of claim 1 , further comprising:outputting the first laser pulse and the second laser pulse from the nonlinear optical crystal.3. The method of claim 1 , wherein the nonlinear optical crystal comprises a periodically-poled quasi-phase-matched crystal.4. The method of claim 1 , wherein the first portion of the nonlinear optical crystal and the second portion of the nonlinear optical crystal are formed as a single unitary material.5. The method of claim 1 , wherein the first portion of the nonlinear optical ...

A surface refractive index scanning system and method

The invention relates to a surface refractive index scanning system for characterization of a sample. The system comprises a grating device for holding or receiving the sample, the device comprising at least a first grating region having a first grating width along a transverse direction, and a second grating region having a second grating width in the transverse direction. The first grating region and the second grating region are adjacent in the transverse direction, wherein the first grating region has a grating period Λ 1 in a longitudinal direction, and the second grating region has a grating period Λ 2 in the longitudinal direction, where the longitudinal direction is orthogonal to the transverse direction. A grating period spacing ΔΛ=Λ 1 -Λ 2 is finite. Further, the first and second grating periods are chosen to provide optical resonances for light respectively in a first wavelength band and a second wavelength band, light is being emitted, transmitted, or reflected in an out-of-plane direction, wherein the first wavelength band and the second wavelength band are at least partially non-overlapping in wavelength. The system further comprises a light source for illuminating at least a part of the grating device with light at an illumination wavelength band. Additionally, the system comprises an imaging system for imaging the emitted, transmitted or reflected light from the grating device. The imaging system comprises an optical element, such as a cylindrical lens or a bended mirror, configured for focusing light in a transverse direction and for being invariant in an orthogonal transverse direction, the optical element being oriented such that the longitudinal direction of the grating device is oriented to coincide with the invariant direction of the optical element, and an imaging spectrometer comprising an entrance slit having a longitudinal direction oriented to coincide with the invariant direction of the optical element. The imaging spectrometer further ...

Sub-nanosecond broad spectrum generating laser system

The present invention provides systems and methods for producing short laser pulses that are amplified and spectrally broadened in a bulk gain media. The bulk material, having laser gain and nonlinear properties, is concurrently exposed to an optical pump input and a seed input, the pump power being sufficient to amplify and spectrally broaden the seed pulse.

Organic Laser for Measurement

This invention provides a system and a method for measuring displacements and movements, particularly for measuring very fine displacements and very minute movements. Position, vibration and rotational/angular movements can be measured. One or more directions can be measured simultaneously. In one embodiment, the system comprises one or more measuring means at least configured to tune multiple color emissions from a laser comprising an organic laser and/or a cascaded organic laser, such that the tuned multiple color emissions of the laser are used in measurements. The system is scalable in order to support measurement across a very large space. Optionally, the system further comprises a thin film laser generating device for generating said laser, blue and green emission organic semiconductors for generating said organic laser, and laser sensors for sensing said laser where said laser sensors comprise organic laser sensors and/or cascaded organic laser sensors.

Ultra-short pulse mid-ir mode-locked laser

A short-pulse mode-locked laser is configured with at least two reflective elements defining a resonant cavity therebetween, a laser gain element (“GE”) placed inside the resonant cavity at normal incidence and selected from transition metal doped II-VI materials; and an optical pump emitting pulsed output to synchronously or quasi-synchronously pump the GE at a pulse repetition rate frequency f pump , the pump being configured so that the f pump substantially matches an inversed round trip time in the resonant cavity f laser :f pump ≈f laser =c/2L, where c is the speed of light, L is the length of the resonant cavity. The synchronous or quasi-synchronous pumping triggers and sustains a short-pulse emission of the laser with picosecond or femtosecond pulse durations.

Laser oscillation device

Disclosed is a laser oscillation device. The laser oscillation device comprises: a first substrate; a second substrate which is provided above the first substrate and forms a wedge cell between the second substrate and the first substrate; a liquid crystal layer, formed by a liquid crystal having the same pitch, which is injected into the wedge cell; and a temperature controller system which is connected to both sides of the wedge cell and controls the temperatures of both sides of the wedge cell to be different from each other.

DISPLAY DEVICES USING FEEDBACK ENHANCED LIGHT EMITTING DIODE

Display devices using feedback-enhanced light emitting diodes are disclosed. The display devices include but are not limited to active and passive matrix displays and projection displays. A light emissive element disposed between feedback elements is used as light emitting element in the display devices. The light emissive element may include organic or non-organic material. The feedback elements coupled to an emissive element allow the emissive element to emit collimated light by stimulated emission. In one aspect, feedback elements that provide this function include, but are not limited to, holographic reflectors with refractive index variations that are continuous. 1. A display device , comprising:a first feedback layer adapted to receive and reflect light;one or more first electrode strips formed over the first feedback layer;one or more semiconducting layers formed over the first electrode strips, at least one of the one or more semiconducting layers comprising at least a luminescent material;one or more second electrode strips formed over the luminescent material the second electrode strips being formed such that they overlay one or more of the first electrode strips, wherein an area where the first electrode strip and the second electrode strip overlap comprises a segment area capable of being driven via the first electrode strips and the second electrode strips;a second feedback layer adapted to receive and reflect light disposed over the one or more second electrode strips; andan imaging element disposed proximate to one of the first feedback layer and the second feedback layer;wherein both the first feedback layer and the second feedback layer have refractive index profiles that vary at least in part periodically along an axis normal or substantially normal to a plane of the respective feedback layer; andwherein the one or more semiconducting layers comprising at least a luminescent material lie in an optical cavity between the first and second feedback ...

ELECTRICALLY TUNABLE LASER WITH CHOLESTERIC LIQUID CRYSTAL HELICONICAL STRUCTURE

A lasing device includes an active layer comprising a cholesteric liquid crystal material and a laser dye, and a liquid crystal cell including spaced apart substrates defining a cell gap in which the active layer is disposed. The substrates include electrodes arranged to bias the active layer into an oblique helicoidal (Ch) state. At least one substrate of the liquid crystal cell is optically transparent for a lasing wavelength range of the device. 1. A device comprising:an active layer comprising a cholesteric liquid crystal material and a laser dye;{'sub': 'OH', 'a liquid crystal cell including spaced apart substrates defining a cell gap in which the active layer is disposed, the substrates including electrodes arranged to bias the active layer into an oblique helicoidal (Ch) state, wherein at least one substrate of the liquid crystal cell is optically transparent for a lasing wavelength range of the device.'}2. The device of further comprising:a pump laser arranged to optically pump lasing in the active layer.3. The device of wherein the pump laser is a Nd:YAG laser.4. The device of wherein the cholesteric liquid crystal material includes a mixture of dimeric CB7CB and dimeric CB9CB.5. The device of wherein the cholesteric liquid crystal material further includes a chiral additive.6. The device of wherein the chiral additive is S811.7. The device of wherein the cholesteric liquid crystal material further includes LC pentylcyanobiphenyle.8. The device of wherein the cholesteric liquid crystal material includes at least one dimeric liquid crystal material.9. The device of wherein the cholesteric liquid crystal material includes a mixture of at least two different dimeric liquid crystal materials.10. The device of wherein the cholesteric liquid crystal material further includes a chiral additive.11. The device of wherein the laser dye includes the DCM laser dye.12. The device of wherein the laser dye includes the LD 688 laser dye.13. A method comprising:{'sub': 'OH ...

HIGH-POWER, RARE-EARTH-DOPED CRYSTAL AMPLIFIER BASED ON ULTRA-LOW-QUANTUM-DEFECT PUMPING SCHEME UTILIZING SINGLE OR LOW-MODE FIBER LASERS

A high average and peak power single transverse mode laser system is operative to output ultrashort single mode (SM) pulses in femtosecond-, picosecond- or nanosecond-pulse duration range at a kW to MW peak power level. The disclosed system deploys master oscillator power amplifier configuration (MOPA) including a SM fiber seed, outputting a pulsed signal beam at or near 1030 nm wavelength, and a Yb crystal booster. The booster is end-pumped by a pump beam output from a SM or low-mode CW fiber laser at a pump wavelength in a 1000-1020 nm wavelength range so that the signal and pump wavelengths are selected to have an ultra-low-quantum defect of less than 3%. 1. A high power single mode (SM) laser system comprising: a single mode (SM) seed outputting pulsed signal beam at or around a 1030 nm wavelength λs,', 'an ytterbium (Yb) doped crystal or crystal ceramic booster receiving the signal beam; and, 'a master oscillator power amplifier (MOPA) configuration includinga single or low-mode, continuous-wave (CW) fiber laser outputting high brightness pump beam at a wavelength λp in a 1000-1020 nm wavelength range to end-pump the Yb booster, wherein the signal and pump beams propagate substantially coaxially or collinearly overlapping one another in a range between 80 and 100%, with the wavelengths λs and λp being selected to provide an ultra-low quantum defect.2. The high power SM laser system of claim 1 , wherein the ultra-low quantum effects being less than 3%.3. The high power SM laser system of or claim 1 , wherein the Yb booster includes Yb:YAG crystal or YbOceramic and is shaped as a plate or rod.4. The high power SM laser system of or claim 1 , wherein the wavelength λp of the pump light varies in a 1006-1010 nm wavelength range with a 1010 nm wavelength being preferable claim 1 , the ultra-low quantum effects being between 2 and 2.5%.5. The high power SM laser system of claim 1 , wherein the SM or low-mode CW fiber laser pump is operative to output of up to a few ...

Laser Beam Amplification by Homogenous Pumping of an Amplification Medium

Apparatus and method for the amplification of a laser beam by pumping a homogenous composite source beam through an amplification medium. A slab crystalline active medium is side-pumped via a pump module having a laser diode bar and an optical assembly. The optical assembly has a fast axis collimator and a lens in the fast axis and an array of slow axis collimators and the lens in the slow axis. The lenses are spaced so that the individual source beams from the emitters are: imaged upon a first facet of the amplification medium; have a beam waist at or near the first facet; are sized to fill the first facet; substantially overlap on the first facet; and are directed so that peripheral source beams undergo total internal reflection on entering the amplification medium. Embodiments of multiple laser diode bars and optical assemblies are described together with double side pumping arrangements. 1. Apparatus for amplifying a laser beam , comprising:an amplification medium having a rectangular cross-section providing a first facet with a long edge and a short edge, the long edge being along an x-axis, the short edge being along a y-axis and a z-axis defining a pump axis within a rectangular coordinate system;and a pump module, the pump module comprising:a pump beam, the pump beam being a composite of source beams from emitters arranged in a linear array with a slow axis being parallel to the x-axis and a fast axis being parallel to the y-axis;and an optical assembly located between the emitters and the first facet of the amplification medium;the optical assembly having:adjacent the emitters, a first lens in the fast axis configured to act on the pump beam, an array of second lenses in the slow axis, each second lens configured to act on an individual source beam and a third lens, at a spacing from the first and second lenses, configured to act on the pump beam;wherein the individual source beams overlap at the first facet, are imaged and sized to fill the first facet ...

Implanted vacancy centers with coherent optical properties

In an exemplary embodiment, a structure comprises a plurality of deterministically positioned optically active defects, wherein each of the plurality of deterministically positioned optically active defects has a linewidth within a factor of one hundred of a lifetime limited linewidth of optical transitions of the plurality of deterministically positioned optically active defects, and wherein the plurality of deterministically positioned optically active defects has an inhomogeneous distribution of wavelengths, wherein at least half of the plurality of deterministically positioned optically active defects have transition wavelengths within a less than 8 nm range. In a further exemplary embodiment, method of producing at least one optically active defect comprises deterministically implanting at least one ion in a structure using a focused ion beam; heating the structure in a vacuum at a first temperature to create at least one optically active defect; and heating the structure in the vacuum at a second temperature to remove a plurality of other defects in the structure, wherein the second temperature is higher than the first temperature.

MONOLITHICALLY INTEGRATED LASER WITH LED PUMP

A laser structure including a Si or Ge substrate, a III-V buffer layer formed on the substrate, a light emitting diode (LED) formed on the buffer layer configured to produce visible light, a lens disposed on the LED to focus light from the LED, a photonic crystal layer formed on the LED to receive the light focused by the lens, and a monolayer semiconductor nanocavity laser formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED. The LED and the laser are formed monolithically and the LED acts as an optical pump for the laser. 1. A laser structure including a monolithically formed nanocavity laser and light emitting diode (LED) , comprising:a Si or Ge substrate;a III-V buffer layer formed on the substrate;a light emitting diode (LED) formed on the buffer layer configured to produce visible light;a lens disposed on the LED to focus light from the LED;a photonic crystal layer formed on the LED to receive the light focused by the lens; anda monolayer semiconductor nanocavity laser formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED, wherein the LED and the laser are formed monolithically and the LED acts as an optical pump for the laser.2. The laser structure as recited in claim 1 , wherein the laser includes a WSelaser.3. The laser structure as recited in claim 1 , wherein the LED achieves a threshold pump power to enable the laser to produce laser light.4. The laser structure as recited in claim 1 , wherein the LED includes a transparent substrate LED.5. The laser structure as recited in claim 1 , wherein the LED includes AlGaAs or AlGaInP material.6. The laser structure as recited in claim 1 , wherein the buffer layer further includes an interface material to reduce dislocation defects due to lattice mismatch between the Si or Ge substrate and the III-V buffer layer in order for the monolayer semiconductor nanocavity laser and the LED to be monolithically formed ...

MONOLITHICALLY INTEGRATED LASER WITH LED PUMP

A method for forming a pumped laser structure includes forming a III-V buffer layer on a substrate including one of Si or Ge; forming a light emitting diode (LED) on the buffer layer configured to produce a threshold pump power; forming a photonic crystal layer on the LED and depositing a monolayer semiconductor nanocavity laser on the photonic crystal layer for receiving light through the photonic crystal layer from the LED with an optical pump power greater than the threshold pump power, wherein the LED and the laser are formed monolithically and the LED functions as an optical pump for the laser. 1. A method for forming a pumped laser structure , comprising:forming a III-V buffer layer on a substrate including one of Si or Ge;forming a light emitting diode (LED) on the buffer layer configured to produce a threshold pump power;forming a photonic crystal layer on the LED; anddepositing a monolayer semiconductor nanocavity laser on the photonic crystal layer for receiving light through the photonic crystal layer from the LED with an optical pump power greater than the threshold pump power, wherein the LED and the laser are formed monolithically and the LED functions as an optical pump for the laser.2. The method as recited in claim 1 , further comprising focusing the light from the LED using a lens disposed between the LED and the photonic crystal layer.3. The method as recited in claim 2 , further comprising forming the lens between the LED and the photonic crystal layer claim 2 , wherein the photonic crystal layer receives the focused light.4. The method as recited in claim 2 , wherein the lens is formed to include a diffraction grating including circular concentric rings.5. The laser structure as recited in claim 1 , wherein the LED includes at least one of AlGaAs or AlGaInP material.6. The method as recited in claim 1 , wherein the monolayer semiconductor nanocavity laser is formed to include a monolayer of a transition metal dichalcogenide.7. The method as ...

Method and apparatus for identifying an object

Optical uses of diamondoid-containing materials

Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may be fabricated from the diamondoid-containing materials disclosed herein include solid state dye lasers, semiconductor lasers, light emitting diodes, photodetectors, photoresistors, phototransistors, photovoltaic cells, solar cells, anti-reflection coatings, lenses, mirrors, pressure windows, optical waveguides, and particle and radiation detectors.

Optical uses diamondoid-containing materials

Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may be fabricated from the diamondoid-containing materials disclosed herein include solid state dye lasers, semiconductor lasers, light emitting diodes, photodetectors, photoresistors, phototransistors, photovoltaic cells, solar cells, anti-reflection coatings, lenses, mirrors, pressure windows, optical waveguides, and particle and radiation detectors.

METHOD OF FABRICATING TUBULAR LASER LIGHT SOURCE, TUBULAR LASER LIGHT SOURCE AND DETECTION DEVICE USING TUBULAR LASER LIGHT SOURCE

A tube preparation step of preparing a resin tube that has a tube wall impregnable with a solution including a fine substance and is made of a light-transmitting resin material, a solution preparation step of preparing a solution that includes a fine fluorescent substance that emits fluorescence or a fine scattering substance that scatters light as an oscillation material and an impregnation step of causing the resin tube to be immersed in the solution and causing the tube wall of the resin tube to be impregnated with the oscillation material, are included. 1. A method of fabricating a tubular laser light source that oscillates laser light outwardly of a tube wall based on light emitted from a fluorescent substance or scattered by a scattering substance , including:a tube preparation step of preparing a resin tube that has the tube wall impregnable with a solution including a fine substance and is made of a light-transmitting resin material;a solution preparation step of preparing a solution that includes a fine fluorescent substance that emits fluorescence or a fine scattering substance that scatters light as an oscillation material; andan impregnation step of causing the resin tube to be immersed in the solution and causing the tube wall of the resin tube to be impregnated with the oscillation material.2. The method of fabricating a tubular laser light source according to claim 1 , whereina refractive index adjusting substance for adjusting a refractive index in the tube wall is included in the solution in the solution preparation step, andthe tube wall is impregnated with the refractive index adjusting substance together with the oscillation material in the impregnation step.3. The method of fabricating a tubular laser light source according to claim 1 , whereinthe resin tube is an acrylic acid tube. This is a divisional under 35 USC § 121 of co-pending U.S. application Ser. No. 16/771,297, filed Jun. 10, 2020, which is a 35 USC § 371 national stage application ...

강하게 산란하여 레이저와 같은 작용을 하는 이득 매체를 갖는 광 소오스(optical sources having a strongly scattering gain medium providing laser-like action)

다상 시스템으로 구성되는 이득매질에 있어서, 제1의 상기 전자기 복사 방사상이고 제2의 상은 전자기 복사 산란상이며 제3의 상은 투명한 매트릭스상이다. 예를 들면 상기 방사상은 염료분자들로 구성할 수 있고 상기 산란상은 높은 콘트라스트 입자들로 구성할 수도 있다. 그리고 상기 매트릭스상은 메탄올과 같은 솔벤트로 구성할 수 있다. 본 발명의 몇몇 실시예에서 반도체입자들을 사용할 때와 마찬가지로 상기 방사 및 산란상은 동일한 상일 수도 있다. 상기 이득매질로 이루어진 몸체의 최소 크기는 상기 산란상과 관련된 산란길이보다 작을 수 있을 것이다. 그것은 거의 문턱이 없는 레이저 작용이 콜로이드 상태의 TiO 2 또는 Al 2 O 3 루비 나노입자들을 포함하는 강하게 산란시키는 광학적으로 펌핑된 염료-메탄올 용액에서 관찰되는 것을 설명한다. 상기 고 이득 콜로이드로부터 방사는 임계 펌프 펄스 에너지 이상에서 선형 입.출력특성의 슬로우프 변화를 보인다. 상기 슬로우프 변화는 높은 펌프에너지에서 나타나는 두가지 색의 스펙트럼과 함께 스펙트럼선의 좁아짐을 수반한다.

Use of spiro compounds as laser dyes

Use of spiro compounds of formula (I), where K 1 and K 2 are, independently of one another, conjugated systems, as a laser dye.

Method of reducing particle size and degree of agglomeration at stage of initial precursors synthesis when producing yttrium aluminium garnet

FIELD: chemistry. SUBSTANCE: invention relates to the technology of producing compounds of complex oxides with a garnet structure, solenated by rare-earth elements, which can be used in the technology of synthesis of optical ceramic materials of laser quality when creating active bodies of solid-state lasers of different geometry. Method of reducing particle size and degree of agglomeration at the stage of synthesis of precursor in producing aluminium yttrium pomegranate involves preparing an initial solution of yttrium chlorides, aluminium, ytterbium and erbium with given composition based on formula YAG: Yb (15 at.%)/Er (3 at.%) by dissolving chlorides in water while heating, followed by introduction of ammonia into aqueous solution, decantation in deionised water, filtration, subsequent drying and grinding, wherein solutions of initial chlorides contain ammonium persulphate with concentration from 0 to 1.0 mol/l, preferable concentration of ammonium persulphate from 0.02 to 0.15 mol/l. EFFECT: on the basis of obtained precursors optical ceramic with optical transmission from 72 to 82 % is obtained. 1 cl, 6 dwg, 3 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C30B 29/28 (2006.01) C01F 17/00 (2006.01) C01F 1/00 (2006.01) C01F 7/02 (2006.01) C04B 35/44 (2006.01) C04B 35/50 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА C04B 35/626 (2006.01) ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ B22F 9/04 (2006.01) B22F 9/24 (2006.01) H01S 3/16 (2006.01) (12) (13) 2 700 074 C1 B82B 3/00 (2006.01) B82Y 40/00 (2011.01) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК 2018112193, 04.04.2018 (24) Дата начала отсчета срока действия патента: 04.04.2018 Дата регистрации: 12.09.2019 2 7 0 0 0 7 4 R U (45) Опубликовано: 12.09.2019 Бюл. № 26 Адрес для переписки: 355017, г. Ставрополь, ул. Пушкина, 1, СевероКавказский федеральный университет (73) Патентообладатель(и): Федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" (RU) (56) Список ...

Method for doping a polymer

(a) 공액 폴리머 또는 공액 폴리머의 전구체와, 제2폴리머를 함유하는 용액에 대해, 상기 공액 폴리머, 상기 전구체 또는 상기 제2폴리머에 결합가능한 도펀트 부분(moiety)을 갖는 도핑제를 첨가하는 공정과, (b) 상기 도펀트 부분을 상기 공액 폴리머, 상기 전구체 또는 상기 제2폴리머에 결합시킴으로써 공액 폴리머에 도핑을 실시하는 공정을 포함하여 이루어지는, 도펀트에 의해 도핑된 공액 폴리머의 제조 방법으로서, 여기서 상기 공정 (a)에서, 공액 폴리머를 완전히 도핑시키는데 필요한 양보다 적은 양으로 도핑제를 첨가시킴을 특징으로 하는, 도핑된 공액 폴리머의 제조 방법. (a) adding a dopant having a dopant moiety bondable to the conjugated polymer, the precursor or the second polymer, to a solution containing the conjugated polymer or the precursor of the conjugated polymer and the second polymer; and (b) doping the conjugated polymer by binding the dopant portion to the conjugated polymer, the precursor, or the second polymer, wherein the process comprises: In (a), the dopant is added in an amount less than necessary to completely doped the conjugated polymer. 폴리머의 도핑 방법 Doping Method of Polymer

Stimulated emission luminescent light-guide solar concentrators

A solar concentrator comprising: A luminescent layer having luminescent particles capable of becoming excited by absorbing solar light of a first absorption frequency and, once excited, being capable of being stimulated to emit luminescent light at a first emission frequency. A light source for generating a pump light of the first emission frequency for stimulating the excited luminescent particles having absorbed solar light such that when the pump light traveling in a direction of travel stimulates the luminescent particles having absorbed solar light at the first absorption frequency the luminescent particles emit luminescent light at the first emission frequency in the direction of travel of the pump light, intensifying the pump light. A light guide adjacent to and optically coupled with the luminescent layer, the light-guide for assisting in guiding the intensified pump light via total internal reflection to a light collection area.

Laser gain medium for solid dye lasers

本発明は、誘導されて前もって定めた波長範囲内でレーザー光線を放出するように適合させた少なくとも１種の活性核種及び前記レーザー光線用の共鳴器を定める光学帰還装置を有するレーザー利得媒質に関する。帰還装置は、前記の前もって定めた波長範囲に同調させた反射帯により定められた光の選択反射を生じる実質的に平面テクスチャーを有する少なくとも１個の実質的に固体のコレステリック層を有する。

Stimulated emission luminescent light-guide solar concentrators

A solar concentrator comprising: A luminescent layer having luminescent particles capable of becoming excited by absorbing solar light of a first absorption frequency and, once excited, being capable of being stimulated to emit luminescent light at a first emission frequency. A light source for generating a pump light of the first emission frequency for stimulating the excited luminescent particles having absorbed solar light such that when the pump light traveling in a direction of travel stimulates the luminescent particles having absorbed solar light at the first absorption frequency the luminescent particles emit luminescent light at the first emission frequency in the direction of travel of the pump light, intensifying the pump light. A light guide adjacent to and optically coupled with the luminescent layer, the light-guide for assisting in guiding the intensified pump light via total internal reflection to a light collection area.

Display devices using feedback enhanced light emitting diode

Display devices (fig.3) using feedback-enhanced light emitting diodes are disclosed. The display devices include but are not limited to active and passive matrix displays and projection displays. A light emissive element disposed between feedback elements is used as light emitting element in the display devices. The light (104) emissive element may include organic or non-organic material. The feedback elements coupled to an emissive element allow the emissive element to emit collimated light by stimulated emission. In one aspect, feedback elements that provide this function include, but are not limited to, holographic reflectors with refractive index variations that are continuous.

Organic lasers

The present invention includes a laser comprising a first mirror layer (110) and a layer of first active organic material (112) over the first mirror layer (110). The first active organic material lases when pumped to thereby produce laser light. The first mirror layer (110) reflects at least a portion of the light produced by the first active organic material. The invention includes both optically and electrically pumped embodiments.

A composition for photon-energy up-conversion

A composition for photon energy up-conversion comprising at least two components, wherein a first component is capable of absorbing energy at a first wavelength region w≤λ 1 ≤x, which first component acts as a sensitiser in said composition, and wherein a second component is capable of emitting energy at a second wavelength region y≤λ 2 ≤z, which second component acts as an emissive component in said composition, wherein λ 2 ≤λ 1 , and wherein, upon absorption of energy by said first component at said first wavelength region λ 1 , said emissive component emits energy at said second wavelength region λ 2 , characterized in that said first component and/or said second component is an organic compound. The present invention also relates to a system comprising said composition and to uses of said composition and system.

Composition for photon-energy up-conversion

The present invention relates to a composition for photon energy up-conversion, a system comprising said composition and to uses of said composition and said system.

Optical devices

An optical device having a layer comprising an organic material that includes a substantially uniform dispersion of light transmissive nanoparticles.

Incoherent light-emitting device apparatus for driving vertical laser cavity

레이저 방출 장치는 인코히어런트 발광 디바이스로부터 투과되는 광을 생성하기 위해 양단에 전계가 인가되는 발광층을 갖는 인코히어런트 발광 디바이스와, 인코히어런트 발광 디바이스로부터 투과된 광을 수광하여 레이저 광을 생성하도록 배치된 수직형 레이저 공동 구조물을 포함한다. The laser emitting device includes an incoherent light emitting device having a light emitting layer having an electric field applied to both ends thereof to generate light transmitted from the incoherent light emitting device, and to receive laser light transmitted from the incoherent light emitting device to generate laser light. A vertical laser cavity structure disposed.

Alminum mixed oxide, manufacture and use

Creating photon atoms

A narrow linewidth fluorescent emitter can incorporate a chromophore into a microcavity that can support low-order optical modes.

Optically-based methods and apparatus for sorting garments and other textiles

A method is disclosed for sorting textiles, as is a system that operates in accordance with the method. The method includes steps of (a) providing a plurality of textiles to be sorted, each of the textiles comprising a portion that includes an electromagnetic radiation emitting and amplifying material; for each textile, (b) illuminating at least the portion with laser light that exceeds a threshold fluence; (c) detecting a narrow band laser-like emission of at least one wavelength from the portion in response to the step of illuminating; and (d) sorting the textiles based on the detected laser-like emission. In one embodiment the textile has at least one stitched-in thread, the thread comprising a substrate material and the electromagnetic radiation emitting and amplifying material in combination with scatterers for providing the laser-like emission. In another embodiment the textile has an applied patch containing the electromagnetic radiation emitting and amplifying material. In this case the scatterers can comprise the material of the textile either alone or in combination with the material of the patch. The emission wavelength(s) are selected so as to encode desired information, such as a customer identification, a date the textile was first placed into service, an identification of the vendor of the textile, an identification of the type and/or size of the textile, etc.

Optical sources having a strongly scattering gain medium providing laser-like action

A gain medium is comprised of a multi-phase system wherein: a first phase is an electromagnetic radiation emission phase; a second phase is an electromagnetic radiation scattering phase; and a third phase is a transparent matrix phase. By example, the emission phase may consist of dye molecules, the scattering phase may consist of high contrast particles, and the matrix phase may consist of a solvent such as methanol. In some embodiments of this invention the emission and scattering phases may be the same phase, as when semiconductor particles are employed. A smallest dimension of a body comprised of the gain medium may be less than a scattering length associated with the scattering phase. It is shown that nearly thresholdless laser behavior is observed in strongly scattering optically pumped dye-methanol solutions containing colloidal TiO 2 or Al 2 O 3 ruby nanoparticles. The emission from the high gain colloid exhibits a slope change in the linear input-output characteristics above a critical pump pulse energy. The change in slope is accompanied by a spectral line narrowing with a bichromatic spectrum appearing at high pump energies.

Novel Kerr-lens mode-locking Cr: ZnS femtosecond laser

本发明提供了一种新型的克尔透镜锁模Cr:ZnS飞秒激光器，其包括连续激光泵浦源、光学耦合系统、多晶Cr:ZnS晶体和谐振腔；其中，连续激光泵浦源向谐振腔内提供能量，光学耦合系统将所述能量聚焦到多晶Cr:ZnS晶体，多晶Cr:ZnS晶体放置在谐振腔内，为激光的形成提供增益，谐振腔提供一往返光路，以使激光在谐振腔内发生振荡并实现锁模。还提供了该克尔透镜锁模Cr:ZnS飞秒激光器的使用方法和应用。所述克尔透镜锁模Cr:ZnS飞秒激光器能够获得波长在2.3μm附近的锁模激光输出，可以广泛地应用在激光雷达、激光医疗、材料加工、大气通讯与检测、土壤污染物探测或超快光谱学。

Optical method and apparatus for sorting textiles

阐述用于分选纺织品(14)的一个方法和系统(10)。多个准备分选的纺织品(14),每个纺织品具有包括电磁辐射发射和放大材料的部位;纺织品(14)用激光器(20)照射。响应激光器(20)的照射,从具有辐射放射和放大材料的部位,产生至少一个波长的窄波段类似激光的发射;根据检出的类似激光的发射分选纺织品。电磁辐射发射和放大材料可包括至少一条被缝合的细线,此细线包括基质材料和电磁辐射发射及放大材料,与散射体结合,或一个包括电磁辐射发射及放大材料和散射体的贴片。

Modification method and application of organic photoelectric material

本发明属于有机光电材料领域，公开了一种有机光电材料的改性方法及应用。它是有机光电材料溶液在极性不同的有机溶剂蒸汽中挥发，得到晶体结构不同的微米有机光电材料，用于改性同一种有机光电材料，制备分别符合法布尔‑珀罗谐振模式和回声壁谐振模式的谐振腔。本发明所提供的改性方法，操作简单，便于操控，所得产品纯度高，节约成本。本发明适用于有机光电材料改性，尤其适用于将同一种有机光电材料改性为不同晶体构型以符合不同谐振模式的微米有机光电材料。

Composition for photon energy up-conversion and a device comprising the same

본 발명은 광자 에너지 상향-변환을 위한 조성물, 상기 조성물을 포함하는 시스템 및 상기 조성물 및 상기 시스템의 용도에 관한 것이다. The present invention relates to a composition for photon energy up-conversion, a system comprising said composition and the use of said composition and said system. 광자 에너지 상향-변환, 증감제, 방출제 Photon energy up-conversion, sensitizers, emitters

Ceramic material for light generation

Изобретение относится к керамическому материалу (14) для генерации света при облучении излучением, при этом керамический материал содержит пакет слоев (15, 16) с различными составами и/или разными профилями легирования. Керамический материал может быть использован в спектральном детекторе для компьютерной томографии для обнаружения спектральным образом рентгеновских лучей. Также он может быть использован в качестве керамической усиливающей среды лазера. Техническим результатом является снижение неравномерности распределения светового излучения накачки лазера в пространстве в пределах керамической усиливающей среды, снижение высоких градиентов температур в этой керамической усиливающей среде и устранение пиков термомеханических напряжений. 5 н. и 10 з.п. ф-лы, 7 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 702 220 C2 (51) МПК G21K 4/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G21K 4/00 (2019.05) (21)(22) Заявка: 2017113625, 15.09.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: 07.10.2019 25.09.2014 EP 14186311.8 (43) Дата публикации заявки: 25.10.2018 Бюл. № 30 (45) Опубликовано: 07.10.2019 Бюл. № 28 (86) Заявка PCT: EP 2015/070991 (15.09.2015) (87) Публикация заявки PCT: R U 2 7 0 2 2 2 0 WO 2016/046013 (31.03.2016) Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) КЕРАМИЧЕСКИЙ МАТЕРИАЛ ДЛЯ ГЕНЕРАЦИИ СВЕТА (57) Реферат: Изобретение относится к керамическому керамической усиливающей среды лазера. материалу (14) для генерации света при облучении Техническим результатом является снижение излучением, при этом керамический материал неравномерности распределения светового содержит пакет слоев (15, 16) с различными излучения накачки лазера в пространстве в составами и/или разными профилями пределах керамической усиливающей среды, легирования. Керамический материал может быть снижение высоких градиентов ...

Method of producing a low-agglomerated nanosized precursor for synthesis of solid solutions of yttrium-aluminum garnet with rare-earth element oxides

FIELD: manufacturing technology.SUBSTANCE: invention relates to the technology of obtaining compounds of complex oxides with a garnet structure containing rare-earth elements, which can be used in the technology of synthesis of optical ceramic materials of laser quality when creating active bodies of solid-state lasers of different geometries. Method of obtaining a small agglomerated nano-sized precursor for synthesis of solid solutions of yttrium-aluminum garnet with oxides of rare-earth elements (REE) involves preparation of a mother solution of salt cations of specified composition, based on formula (YREE)AlO, where x is fraction of rare-earth element cation or sum of fractions of REE cations introduced into yttrium-aluminum garnet and substituting yttrium cations by dissolving chlorides or sulphates of yttrium, aluminum and rare-earth metals in water with subsequent evaporation to reduction of initial volume by 2 times, at solution temperature of 125 °C; dispersion of obtained mother solutions in mixture of aqueous ammonia solution with 25 % concentration and hydrogen peroxide of 30–40 % concentration in ratio of volumes of ammonia solution:solution of hydrogen peroxide (6–2):1 with subsequent cooling to 0 °C of obtained precipitate, which is decanted in deionised water to pH=7 and then 2–3 portions of hydrogen peroxide of 30–40 % concentration, wherein the last stage of decantation and washing is carried out with hydrogen peroxide of the same concentration, followed by drying in a vacuum drying cabinet at temperature of 60–80 °C.EFFECT: method of producing less agglomerated nano-sized precursor powders is simple, as a result of its use, the time for obtaining the end product is reduced, homogeneity and fineness of the obtained product is increased.1 cl, 7 dwg, 1 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C30B 29/28 (2006.01) C01F 1/00 (2006.01) C01F 7/02 (2006.01) C01F 17/00 (2006.01) C04B 35/44 (2006.01) C04B 35/50 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА C04B ...

Apparatus, method and system for generating optical radiation from biological gain media

In one exemplary embodiment, an apparatus can be provided which includes at least one biological medium that causes gain. According to another exemplary embodiment, an arrangement can be provided which is configured to be provided in an anatomical structure. This exemplary arrangement can include at least one emitter having a cross-sectional area of at most 10 microns within the anatomical structure, and which is configured to generate at least one laser radiation. In a further exemplary embodiment, an apparatus can be provided which can include at least one medium which is configured to cause gain; and at least one optical biological resonator which is configured to provide an optical feedback to the medium. In still another exemplary embodiment, a process can be whereas, a solution of an optical medium can be applied to a substrate. Further, it is possible to generate a wave guide having a shape that is defined by (i) at least one property of the solution of the optical medium, or (ii) drying properties thereof.

Method of producing nanostructured powders of solid solutions based on yttrium-aluminum garnet with rare-earth element oxides

FIELD: technological processes. SUBSTANCE: invention relates to production of nanostructured powders of solid solutions based on yttrium-aluminum garnet, alloyed with rare-earth elements for production of ceramics, used as an active medium of a solid-state laser, heat-resistant high-temperature electric insulating material, windows or lenses in optical instruments, optical elements in the infrared region of the spectrum. Method of producing nanostructured powders of solid solutions based on yttrium-aluminum garnet with rare-earth elements involves preparation of a mother solution, evaporation to a concentrated state, combined coprecipitation through coprecipitation of the mother solution with subsequent filtration of the precipitated precursor powder, decantation, drying, and heat treatment at 1,000 °C, wherein the mother solution of nitrate salts of yttrium, aluminum and nitrate salts of rare-earth elements Er, Tm, Ho or their compositions Er-Tm; Er-No; Er-Tm-No within 1.0–50.0 at% is dissolved in distilled water while heating and evaporated to concentration of 0.88÷0.92 mol/l, is sprayed in 25 % ammonium hydroxide solution cooled to temperature of 0 °C–2 °C compressed air through capillary with providing crushing of jet of saturated mother solution to fog-like condition to produce precursor powder Y 3-X Me X Al 5 O 8 (OH) 4 , where Me=Er, Tm, Ho, x=1.5; 0.05; 0.01, respectively, the pulp is decanted in distilled water with addition of 0.05 wt% polyvinylpyrrolidone from the amount of the ammonium hydroxyl solution to form interlayers preventing hydration and combining the particles into dense agglomerates, filtering, powders are dried by hot air at 60 °C–100 °C on spray drier and subjected to mechanical activation in vibration or planetary type mill in fluoroplastic drums with zirconium balls with diameter of 1.0 mm for 120 minutes in ethanol medium at ratio of precursor powder to total amount of zirconium balls and ethanol equal to 1:6.5; ethanol is removed by ...

Silicon nitride thin film for optical device and fabrication method thereof

본 발명은 비정질 실리콘 양자점과 희토류 원소가 함께 분산되어 포함되며 비정질 실리콘 양자점에 의해 희토류 원소가 여기되어 광을 방출시키는 광소자용 실리콘 질화물 박막 및 그 제조방법을 제공한다. 이를 이용하면, 비정질 실리콘 양자점이 희토류 원소의 발광특성을 매우 향상시켜 우수한 성능의 광소자를 만들 수 있다. The present invention provides a silicon nitride thin film for an optical device and a method for manufacturing the same, wherein the amorphous silicon quantum dots and rare earth elements are dispersed and included together and the rare earth elements are excited by the amorphous silicon quantum dots to emit light. By using this, an amorphous silicon quantum dot can greatly improve the light emitting characteristics of the rare earth element, thereby making an optical device having excellent performance. 양자점, 비정질 실리콘 양자점, 희토류, 광소자 Quantum dots, amorphous silicon quantum dots, rare earths, optical devices

CERAMIC MATERIAL FOR LIGHT GENERATION

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 113 625 A (51) МПК G21K 4/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017113625, 15.09.2015 (71) Заявитель(и): КОНИНКЛЕЙКЕ ФИЛИПС Н.В. (NL) Приоритет(ы): (30) Конвенционный приоритет: 25.09.2014 EP 14186311.8 30 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 25.04.2017 EP 2015/070991 (15.09.2015) (87) Публикация заявки PCT: A WO 2016/046013 (31.03.2016) Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" R U (57) Формула изобретения 1. Устройство обнаружения для обнаружения гамма- или рентгеновского излучения, причем устройство (6) обнаружения содержит: - керамический сцинтиллятор (14), содержащий керамический материал для генерации света при облучении излучением, при этом керамический материал (14, 45) содержит пакет слоев (15, 16, 47), включающий первый слой (15) и второй слой (16), оба из которых имеют структуру граната; и при этом первый слой (15) и второй слой (16) имеют по меньшей мере одно из i) различных составов, ii) различных легирующих примесей, iii) различных концентраций легирующей примеси; и при этом первый слой (15) выполнен с возможностью, при облучении упомянутым излучением, генерации первого излучения (17), а второй слой (16) выполнен с возможностью, при облучении упомянутым излучением, генерации второго излучения (18), причем первое излучение (17) и второе излучение (18) являются различными; и - детектор (19, 30) для формирования первого значения обнаружения, зависящего от первого излучения (17), и второго значения обнаружения, зависящего от второго излучения (18), и при этом: а) первый слой (15) и второй слой (16), оба, сформированы в одном и том же куске керамического материала; или b) и первый слой (15), и второй слой (16) сформированы из одного и того же состава Стр.: 1 A 2 0 1 7 1 1 3 6 2 5 (54) КЕРАМИЧЕСКИЙ МАТЕРИАЛ ДЛЯ ГЕНЕРАЦИИ СВЕТА 2 0 1 7 ...

Apparatus, method and system for generating optical radiation from biological gain media

In one exemplary embodiment, an apparatus can be provided which includes at least one biological medium that causes gain. According to another exemplary embodiment, an arrangement can be provided which is configured to be provided in an anatomical structure. This exemplary arrangement can include at least one emitter having a cross-sectional area of at most 10 microns within the anatomical structure, and which is configured to generate at least one laser radiation. In a further exemplary embodiment, an apparatus can be provided which can include at least one medium which is configured to cause gain; and at least one optical biological resonator which is configured to provide an optical feedback to the medium. In still another exemplary embodiment, a process can be whereas, a solution of an optical medium can be applied to a substrate. Further, it is possible to generate a wave guide having a shape that is defined by (i) at least one property of the solution of the optical medium, or (ii) drying properties thereof.

Lighting devices using feedback enhanced light emitting diode

公开了使用反馈增强型发光器件的照明器件(200)。阴极(102)和阳极(104)的位置是可互换的。该器件还包括安置于与底反馈层(106)相邻的基片(106)。置于反馈元件之间的发光二极管(FE－LED)可以用作照明器件中的光发射元件。光发射元件可以耦合到配光元件。在一个方面，发光二极管可以是有机发光二极管(FE－OLED)。

Laser emitting material, method for making the same and use thereof

A solid-state laser emitting material for use in conjunction with a light source includes a polymer matrix functioning as host materials, containing laser dye of rhodamine 590 or rhodamine 610 as gain materials and nano-submicron particles as scatters therein. The lowest lasing threshold of the laser emitting material is approximately 5 mJ/cm 2 for 585 nm emission and 2 mJ/cm 2 for 630 nm emission.

Thin disk laser with large numerical aperture pumping

An optical system has a high power diode pump source and a thin disk gain media. An optical coupler is positioned between the diode pump source and the thin disk gain media. The optical coupler produces a beam with a large numerical aperture incident on the thin disk gain media.

COLORING LASER IN SOLID STATE.

MIXED STRONTIUM AND LANTHANIDE OXIDES AND LASER USING SINGLE CRYSTALS OF THESE OXIDES.

MIXED ALUMINUM OXIDES, PROCESS FOR THEIR PRODUCTION AND THEIR APPLICATION

L'INVENTION CONCERNE DES OXYDES MIXTES D'ALUMINIUM ET LEUR PROCEDE DE FABRICATION SOUS FORME DE MONOCRISTAUX. CES OXYDES PRESENTENT LA FORMULE: (CF DESSIN DANS BOPI) DANS LAQUELLE X ET X QUI PEUVENT ETRE IDENTIQUES OU DIFFERENTS REPRESENTENT UN METAL DE LA SERIE DES TERRES RARES A CONDITION QUE X ET X SOIENT DIFFERENTS LORSQUE X ET X REPRESENTENT LE CERIUM, LE LANTHANE OU LE GADOLINIUM; M ET M QUI PEUVENT ETRE IDENTIQUES OU DIFFERENTS REPRESENTENT UN METAL CHOISI DANS LE GROUPE COMPRENANT LE MAGNESIUM, LES METAUX DE TRANSITION TRIVALENTS; M REPRESENTE UN METAL DE TRANSITION TRIVALENT; X, Y ET Z QUI PEUVENT ETRE IDENTIQUES OU DIFFERENTS REPRESENTENT UN NOMBRE COMPRIS ENTRE 0 ET 1. APPLICATION AUX LASERS DE PUISSANCE EMETTANT DANS L'INFRAROUGE ET AUX TELECOMMUNICATIONS PAR FIBRES OPTIQUES. THE INVENTION CONCERNS MIXED ALUMINUM OXIDES AND THEIR MANUFACTURING PROCESS IN THE FORM OF SINGLE CRYSTALS. THESE OXIDES HAVE THE FORMULA: (CF DRAWING IN BOPI) IN WHICH X AND X WHICH MAY BE IDENTICAL OR DIFFERENT REPRESENT A METAL FROM THE RARE EARTHS SERIES PROVIDED THAT X AND X ARE DIFFERENT WHEN X AND X REPRESENT CERIUM, LANTHAN OR THE GADOLINIUM; M AND M WHICH MAY BE THE SAME OR DIFFERENT REPRESENT A METAL CHOSEN FROM THE GROUP INCLUDING MAGNESIUM, THE TRIVALENT TRANSITION METALS; M REPRESENTS A TRIVALENT TRANSITION METAL; X, Y AND Z WHICH MAY BE THE SAME OR DIFFERENT REPRESENT A NUMBER BETWEEN 0 AND 1. APPLICATION TO POWER LASERS EMITTING IN THE INFRARED AND TO TELECOMMUNICATIONS BY FIBER OPTICS.

MIXED OXIDES OF STRONTIUM AND LANTHANIDE AND LASER USING MONOCRYSTALS OF THESE OXIDES.

Ces oxydes à structure cristalline du type magnétoplombite présentent la formule suivante: (CF DESSIN DANS BOPI) dans laquelle Ln1 représente au moins un élément trivalent choisi parmi le lanthane, le gadolinium et l'yttrium; Ln2 représente au moins un élément trivalent choisi parmi le néodyme, le praséodyme, l'erbium, l'holmium et le thulium; Ln3 représente un élément choisi parmi l'europium bivalent ou le cérium trivalent avec conservation de la neutralité électrique grâce à des lacunes d'oxygène; M représente au moins un métal bivalent choisi parmi le magnésium, le manganèse et le zinc; A représente au moins un métal trivalent choisi parmi l'aluminium et le gallium; B représente un métal de transition trivalent choisi parmi le chrome et le titane; x, y1, y2, y3, z, a, b et k représentent des nombres tels que 0<x<1, 0<=y1<1, 0<y2<1, 0<=y3<1, 0<z<1, 10,5<a<12, 0<=b<=0,5 et 0<=k<=1 à condition que 0<x+y1+y2+y3<=1 et que 11<z+a+b<=12. Ils présentent à l'état de monocristaux (4) des propriétés lasers permettant de les utiliser dans des lasers de puissance pompés par une diode laser (6). These oxides with a crystalline structure of the magnetoplombite type have the following formula: (CF DRAWING IN BOPI) in which Ln1 represents at least one trivalent element chosen from lanthanum, gadolinium and yttrium; Ln2 represents at least one trivalent element chosen from neodymium, praseodymium, erbium, holmium and thulium; Ln3 represents an element chosen from bivalent europium or trivalent cerium with conservation of electrical neutrality by virtue of oxygen vacancies; M represents at least one divalent metal chosen from magnesium, manganese and zinc; A represents at least one trivalent metal chosen from aluminum and gallium; B represents a trivalent transition metal chosen from chromium and titanium; x, y1, y2, y3, z, a, b and k represent numbers such as 0 <x <1, 0 <= y1 <1, 0 ...

Patent FR2486519B1

MIXED YTTRIUM AND LANTHANIDE SILICATES AND LASER USING SINGLE CRYSTALS OF THESE SILICATES.

Laser i.e. pulsed laser, for delivering energy luminous impulsion in e.g. medical field, has guiding unit guiding pump light ray from pump light ray source device to lighting points of laser material

The laser (1) has a laser material, and an optical pumping device for optically pumping the laser material. A guiding unit guides a pump light ray from a pump light ray source device to lighting points of the laser material. A cooling system is extended between the lighting points, where the lighting points are distributed in proximity of a pump ray receiving surface of the laser material. The guiding unit has an optical fiber (13) whose ends (131) are fixed in holes (141) by gluing.

MIXED SILICATES OF YTTRIUM AND LANTHANIDE AND LASER USING MONOCRYSTALS OF THESE SILICATES.

Le laser comporte une cavité laser (2) renfermant comme émetteur de lumière un monocristal (4), des moyens d'amplification (12, 14) de la lumière issue du monocristal, des moyens de sortie (14) de la lumière hors de la cavité laser et des moyens de pompage optique (6), caractérisé en ce que le monocristal présente la formule (I) suivante: (CF DESSIN DANS BOPI) dans laquelle M représente un lanthanide choisi parmi l'erbium et le thulium et x et y représentent des nombres tels que 0 The laser comprises a laser cavity (2) containing as a light emitter a single crystal (4), means (12, 14) for amplifying the light coming from the single crystal, means (14) for outputting the light out of the laser cavity and optical pumping means (6), characterized in that the single crystal has the following formula (I): (CF DRAWING IN BOPI) in which M represents a lanthanide chosen from erbium and thulium and x and y represent numbers such as 0

Organic solid-state dye laser

Organischer Festkörper-Farbstofflaser (1) umfassend: eine Dauerstrich-Anregungslichtquelle (16) und eine Resonatorstruktur, die durch die Dauerstrich-Anregungsquelle (16) bestrahlt ist, die Resonatorstruktur ein Substrat (2) und eine auf dem Substrat ausgebildete dünne Schicht einer Dicke zwischen 100 nm und 10 μm eines organischen Halbleiters (3) aufweist, dadurch gekennzeichnet, dassdie Resonatorstruktur ein kreisförmiges Beugungsgitter mit einer Tiefe h von 2 bis 100 nm aufweist, die dünne Schicht des organischen Halbleiters (3) ein organisches Halbleitermaterial mit einer Fluoreszenzquantenausbeute von 100% aufweist, das organische Halbleitermaterial entweder BSB-Cz (4,4'-Bis[(N-carbazol)styryl]biphenyl), ausgedrückt durch die Formel (1), oder TPD (N,N'-Diphenyl-N,N'-(3-methylphenyl)-1,1'-biphenyl)-4,4'-diamin), ausgedrückt durch die Formel (2), beinhaltet, in den Absorptionscharakteristiken durch Anregungslichtbestrahlung der dünnen Schicht des organischen Halbleiters (3) keine Absorption im angeregten Zustand eines Singulett-Singulett- und Triplett-Triplett-Anregungszustands bei der Spitzenwellenlänge einer verstärkten spontanen Emission besteht, und die verstärkte spontane Emission kontinuierlich erreichbar ist durch die Anregungslichtbestrahlung, ... An organic solid state dye laser (1) comprising: a continuous wave excitation light source (16) and a resonator structure irradiated by the continuous wave excitation source (16), the resonator structure having a substrate (2) and a thin layer formed on the substrate of a thickness between 100 nm and 10 μm of an organic semiconductor (3), characterized in that the resonator structure has a circular diffraction grating with a depth h of 2 to 100 nm, the thin layer of the organic semiconductor (3) an organic semiconductor material with a fluorescence quantum yield of 100% has, the organic semiconductor material either BOD-Cz (4,4'-bis [(N-carbazole) styryl] biphenyl), expressed by the ...

NOVEL MIXED OXIDES FOR PARTICULAR USE IN TUNABLE LASERS

A novel passive Q-switched laser

Optical electronic devices

나노입자와 다른 물질의 혼합물로부터 사용을 위한 나노입자를 제조하는 방법으로서, 상기 방법이 상기 나노입자를 용해시킬 수 있는 용매를 사용하여 상기 혼합물을 세척하여 상기 다른 물질을 제거하고, 나노입자가 상기 용매에 용해되어 있는 용액을 형성시키는 것을 포함하는 방법. A method of making nanoparticles for use from a mixture of nanoparticles and other materials, wherein the method removes the other material by washing the mixture with a solvent capable of dissolving the nanoparticles, wherein the nanoparticles are Forming a solution dissolved in a solvent.

Laser dye impregnated silica sol-gel monoliths

The present invention relates to a dye laser including a highly porous, consolidated silica sol-gel monolith having incorporated therein at least one laser dye, wherein the dye laser is substantially solvent free. The dye laser is prepared by immersing a highly porous, consolidated silica sol-gel monolith in a solution of at least one laser dye and at least one solvent until the solution enters the pores of the monolith to a significant degree to form an impregnated silica sol-gel monolith, and then drying the impregnated silica sol-gel monolith to vaporize substantially all the solvent present within the pores of the monolith.

Laser oscillator and laser beam oscillation method

By using a ceramics laser medium such as Nd:YAG ceramics or Yb:YAG ceramics, division of a lateral mode pattern to a local mode is suppressed so that single frequency, linear polarization oscillation are achieved in TEM 00 mode. A laser oscillator comprising a laser light source for oscillating the pumping light, and a laser medium of Nd:YAG ceramics or Yb:YAG ceramics having an average grain size of 5µm or less upon which the pumping light impinges is provided. The laser medium may have a first surface having a first dielectric multilayer film, and a second surface having a second dielectric multilayer film.

Solid-state organic dye laser

A solid-state organic dye laser (1) comprises a substrate (2) and a resonator structure comprising an organic semiconductor thin film (3) formed on the substrate (2). The organic semiconductor thin film (3) comprises an organic semiconductor material which has a high emission quantum yield and shows substantially no excitation absorption at excitation revel, comprises a bisstylyl derivative or a triphenylamine derivative, and can produce an amplified spontaneous oscillation continuously by irradiation with excitation light. The organic semiconductor thin film (3) may comprise a material having BSB-Cz or TPD added to a host molecule comprising CBP, which can produce an amplified spontaneous oscillation at a threshold value as low as 3 mW.

Patent RU2017113625A3

ВУ’? 2017113625” АЗ Дата публикации: 07.05.2019 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2017113625/07(023852) 15.09.2015 РСТ/ЕР2015/070991 15.09.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 14186311.8 25.09.2014 ЕР Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) КЕРАМИЧЕСКИЙ МАТЕРИАЛ ДЛЯ ГЕНЕРАЦИИ СВЕТА Заявитель: КОНИНКЛЕЙКЕ ФИЛИПС Н.В., МГ. 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) С21К 4/00 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) О21К 4/00 (2006.01) 1 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): СМГРА, О\У/РТ, Езрасепее, Соозе Раб 7-Р1а(Раь К-РЛОМ, КРКГУ, РАТЕМТСОРЕ, Ра еагсЬ, КОРТО, ОЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к ...

Superconducting devices

1318819 AC Josephson effect devices INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [2 March 1970 23 March 1970] 22702/71 Heading H1K A superconductor device comprises a Josephson junction arranged between a pair of electrodes which define a resonant cavity for radiation emitted by the junction by virtue of the AC Josephson effect. The electrodes may be of metal or semi-conductor material and the cavity is defined by the radiation penetration depth in the case of metal and by the depletion layer width in the case of semi-conductor material. When the electrodes are both of metal they are separated by a layer of insulation, e.g. silicon oxide or niobium oxide but when one or both electrodes are of semi-conductor material they may be indirect contact, the Schottky barrier depletion layer providing the electrical insulation. The position of the junction within the cavity determines the mode of operation and a plurality of junctions may be arranged between the same electrodes. Frequency modulation of the output radiation may be achieved when one or both electrodes are of semi-conductor material by varying the biasing voltage to change the width of the depletion layer and hence the width of the cavity. Alternatively the junction may be surrounded by two bodies of piezoelectric material or by a metal body and a body of piezoelectric material arranged to provide an extension of the cavity. Application of voltage to the piezoelectric body enables the effective length or width of the cavity to be varied. The Josephson junctions may be produced by spark erosion in a liquid He environment. For example if a spark is truck between a pointed probe and a block of GaAs, which is to form one electrode, a small region of Ga is produced to provide the junction. The second electrode is then applied for example by evaporation or sputtering. Alternatively the two electrodes may be shaped and placed in proximity, the sparks occurring at the closest points to form the junctions. The ...

Apparatus, method and system for generating optical radiation from biological gain media

In one exemplary embodiment, an apparatus can be provided which includes at least one biological medium that causes gain. According to another exemplary embodiment, an arrangement can be provided which is configured to be provided in an anatomical structure. This exemplary arrangement can include at least one emitter having a cross-sectional area of at most 10 microns within the anatomical structure, and which is configured to generate at least one laser radiation. In a further exemplary embodiment, an apparatus can be provided which can include at least one medium which is configured to cause gain; and at least one optical biological resonator which is configured to provide an optical feedback to the medium. In still another exemplary embodiment, a process can be whereas, a solution of an optical medium can be applied to a substrate. Further, it is possible to generate a wave guide having a shape that is defined by (i) at least one property of the solution of the optical medium, or (ii) drying properties thereof.

Laser oscillator and laser beam oscillation method

By using a ceramics laser medium such as Nd:YAG ceramics or Yb:YAG ceramics, division of a lateral mode pattern to a local mode is suppressed so that single frequency, linear polarization oscillation are achieved in TEM 00 mode. A laser oscillator comprising a laser light source for oscillating the pumping light, and a laser medium of Nd:YAG ceramics or Yb:YAG ceramics having an average grain size of 5 μm or less upon which the pumping light impinges is provided. The laser medium may have a first surface having a first dielectric multilayer film, and a second surface having a second dielectric multilayer film.

Composition for photon energy upconversion and use thereof

Organic semiconductor laser

An optically-pumped laser having a small-molecule thin organic film of DCM doped Alq 3 . Carrier transport properties of the small-molecule organic materials, combined with a low lasing threshold provide a new generation of diode lasers employing organic thin films. An electrically-pumped variant is also described.

Method For Doping A Polymer

A method for forming a conjugated polymer which is doped by a dopant includes the steps of (a) adding a doping agent comprising a dopant moiety to a solution containing the conjugated polymer or a precursor thereof and, optionally, a second polymer, the dopant moiety being capable of bonding to the conjugated polymer, precursor thereof or the second polymer; (b) allowing the dopant moiety to bond to the conjugated polymer, precursor thereof or the second polymer to perform doping of the conjugated polymer, wherein the amount of doping agent added in step (a) is less than the amount required to form a fully doped conjugated polymer.

SURFACE BROKING INDEX IMAGE SURVEYING SYSTEM AND PROCEDURE

Light-transmitting polycrystalline material and process for producing same

Laser gain medium for solid state dye lasers

The present invention relates to a laser gain medium comprising at least one active species adapted to be stimulated to emit laser light within a predetermined wavelength range and optical feedback means defining a resonator for said laser light. The feedback means comprise at least one substantially solid cholesteric layer having a substantially planar texture exhibiting selective reflection of light defined by a reflection band tuned to said predetermined wavelength range.

ORGANIC LASER SYSTEM AND METHOD OF MODIFYING THE TRANSMIT WAVE LENGTH OF THE LASER SYSTEM

L'invention concerne un système laser (8) dans lequel chaque élément amplificateur (20) est un milieu solide comportant au moins une première couche (24) présentant une épaisseur (e1) inférieure à 100 µm et que les molécules adaptées à émettre un rayonnement lumineux de chaque élément amplificateur (20) forment un milieu à gain (22) organique contenu dans la première couche (24) du élément amplificateur (20). The invention relates to a laser system (8) in which each amplifier element (20) is a solid medium comprising at least a first layer (24) having a thickness (e1) of less than 100 μm and that the molecules adapted to emit radiation light of each amplifier element (20) form an organic gain medium (22) contained in the first layer (24) of the amplifier element (20).

Optical oscillator

一実施形態に係る光発振器は、第１波長の光を透過し且つ第２波長の光を反射する第１反射部と、第１反射部と不安定共振器を形成しており第２波長の光を反射する第２反射部と、第１反射部と第２反射部との間に配置されており、第１波長の光の入射により第２波長の光を放出するレーザー媒質と、上記一方向においてレーザー媒質からみて第１反射部と反対側に配置されている可飽和吸収部と、を備え、第１反射部は、レーザー媒質と反対側に第１波長の光が入射される入射面を有し、上記一方向からみて、第２反射部の大きさは第１反射部の大きさより小さく、可飽和吸収体部のレーザー媒質と反対側の面の少なくとも一部は、レーザー媒質側に向けて湾曲した湾曲領域を有し、第２反射部は、湾曲領域に設けられた誘電体多層膜である。