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Применить Всего найдено 2. Отображено 2.
23-05-2023 дата публикации

Speckle suppression device and method for efficient laser beam combination

Номер: CN116149072A
Автор: CHENG JIN, JIAO JIAQING, ZHENG XINYAN, ZHOU SHUN, LIU WEIGUO
Принадлежит:

The invention discloses a speckle suppression device and method for efficient laser beam combination, and relates to the technical field of optics, and the speckle suppression device comprises an even number of laser sources, collimating lenses corresponding to the laser sources in number, reflectors with 1/2 laser sources in number, polarization beam combination prisms with 1/2 laser sources in number, a telescopic system, a beam expanding lens and an optical screen. According to the speckle suppression device, an even number of laser devices are introduced to emit laser, the optical path difference of the incident laser is changed by controlling the distance between the different laser devices, so that the spatial coherence of the laser is broken, laser beams in different polarization states are overlaid in pairs in the space by combining the polarization diversity, and the speckle suppression effect is achieved. And finally, all laser spots are superposed by using the beam expanding ...

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Номер записи: 1
02-05-2023 дата публикации

Laser speckle suppression device and method

Номер: CN116047783A
Автор: CHENG JIN, LI PANGYUE, ZHOU SHUN, JIAO JIAQING, LIU WEIGUO
Принадлежит:

The invention discloses a laser speckle suppression device and method, and belongs to the technical field of optics, the laser speckle suppression device is composed of a laser light source, a collimating lens, a semi-transparent and semi-reflecting mirror, a beam splitting film layer array and a detector, and the laser light source outputs coherent laser; after the collimating lens collimates the laser beam, the laser beam is vertically emitted into the beam splitting film layer array through the semi-transparent and semi-reflecting mirror; the light splitting film layer array divides an incident light beam into a plurality of incoherent sub light beams with the same light intensity. The device is a static speckle suppression device, does not need a power supply and drive, and is compact in structure, small in size, low in energy consumption and long in service life; the device is simple in structure and good in speckle suppression effect, laser beams can be divided into N beams of incoherent ...

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Номер записи: 2