High-power laser frequency-doubling Q-switching device

A high-energy, frequency-doubling technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem that the maximum energy damage threshold of high-energy frequency-doubling lasers cannot be too high.

Active Publication Date: 2012-09-12
上海奥通激光技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] For medicine and scientific research, the high-energy Q-switched 532nm laser used is usually obtained by using a large-spot fundamental-frequency laser through a large-size frequency-doubling crystal and then compressing

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  • High-power laser frequency-doubling Q-switching device
  • High-power laser frequency-doubling Q-switching device

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Embodiment Construction

[0023] figure 1 Shown is a high-energy laser frequency-doubling Q-switching device, including a 1064nm linearly polarized electro-optic Q-switching laser generator 1, and also includes three light-splitting and frequency-doubling devices and a beam combining mirror group 9; the light-splitting and frequency-doubling device Including 1064nm spectroscope 2, 1 / 2 wave plate 3 (or 1 / 4 wave plate), frequency doubling crystal 4, 1064nm high reflection 532nm high transmission filter 5, 532nm beam expander lens set arranged in sequence along the beam splitting path 6. A diaphragm 7 and a 532nm total reflection mirror 8. The 1064nm beamsplitter 2 in each of the light splitting and frequency doubling devices is set on the laser exit optical path of the 1064nm linearly polarized electro-optic Q-switched laser generator 1, and each of the The output optical path of the 532nm total reflection mirror 8 in each light splitting and frequency doubling device corresponds to the beam combining mi...

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Abstract

The invention discloses a high-power laser frequency-doubling Q-switching device which comprises a linear-polarization photoelectric Q-switching laser generator, at least two beam-split frequency-doubling devices and a beam combiner group. Each beam-split frequency-doubling device comprises a beam-split lens, a one second wave plate or one fourth wave plate, a frequency-doubling crystal, an optical filter with high reflectivity to fundamental frequency light and high transmittance to frequency-doubled light, a beam expander lens group, a diaphragm and a frequency-doubled light fully-reflected lens, which are sequentially arranged along a beam split path. Each beam-split lens in each beam-split frequency-doubling device is arranged on the laser emitting path of the linear-polarization photoelectric Q-switching laser generator, each emitting path of each fully-reflected lens in each beam-split frequency-doubling device corresponds to the beam combiner group, and outputs multi-paths of lasers output by at least two beam-split frequency-doubling devices via the beam combiner group in a beam-combining manner, and requirements to the size and quality of the frequency-doubling crystals are effectively lowered.

Description

technical field [0001] The invention relates to a laser device, in particular to a high-energy laser device. Background technique [0002] Titanium-doped sapphire laser, referred to as Ti:sapphire laser, has a wide range of uses in medicine and scientific research because of its continuously adjustable output laser wavelength within a large range (660nm~1.1μm), and its commonly used pump source is often The 532nm electro-optic Q-switched pulsed laser with relatively mature technology is adopted at present, while the 532nm laser is generally obtained by extracavity frequency doubling of a lamp-pumped Nd:YAG laser. [0003] The 532nm electro-optic Q-switched pulsed laser is often used to pump Ti:Sapphire lasers, and the damage threshold of Ti:Sapphire is low. In order to obtain a larger tuned output laser, it is generally obtained by multi-stage amplification. The pump source A Q-switched 532nm laser with a large single pulse energy is often used, and a spectroscopic mirror w...

Claims

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Application Information

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IPC IPC(8): H01S3/11
Inventor 王伟曹庆丰
Owner 上海奥通激光技术有限公司
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