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Multiple frequency one-way overlapped output standard continuous green light laser inside full solid T double-cavity combination cavity

An all-solid-state, combined cavity technology, applied in the field of lasers, can solve the problems of unstable laser output power, low light-to-light conversion efficiency, obvious thermal lens effect, etc., to reduce thermal effects, improve pumping efficiency, and high shut-off capability. Effect

Inactive Publication Date: 2008-09-17
NORTHWEST UNIV(CN)
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Problems solved by technology

[0004] In order to overcome the shortcomings and deficiencies in the existing technology such as low light-to-light conversion efficiency, obvious thermal lens effect, unstable laser output power, and poor beam quality

Method used

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  • Multiple frequency one-way overlapped output standard continuous green light laser inside full solid T double-cavity combination cavity

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Embodiment

[0031] use figure 1 As shown in the laser design scheme, we have developed a quasi-continuous green laser with an output power of 202W. The laser is composed of two sub-cavities, and each sub-cavity uses the same model of semiconductor laser pumping components to side-pump Nd:YAG crystals. Rod, the fundamental frequency 1064nm optical output power of each semiconductor pump component is 200W and the total fundamental frequency optical power is 400W. The size of Nd:YAG rods are Ф4.0×90mm. Using HGTR-KTP with anti-gray line characteristics as frequency doubling crystal (5×5×15mm 3 , Israel RAICLOCrystals company), adopts the type II critical phase matching method, and implements constant temperature control (temperature is 22°), which not only reduces the thermal lens effect of the frequency doubling crystal, but also compensates the frequency doubling caused by thermal effects to a certain extent Crystal phase mismatch improves frequency doubling efficiency. The Q-switching ...

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Abstract

The present invention provides a laser, especially a frequency doubling single direction overlapping output quasi-cw green laser in a full-solid T type double-cavity combined cavity, composed of two F-P, each F-P adopts flat-concave cavity structure, F-P adopts side pumped Nd:YAG crystal of the semiconductor laser pumped component having same model, each F-P is optimized design by computer simulation, a stably rotatable 1064nm fundamental frequency laser is formed in the F-P, each F-P obtains 532nm quasi-cw green laser by the audio-optical Q switching and frequency doubling technology, overlapping in the several frequency doubling crystals, reflecting by the harmonic reflector, obtaining secondary frequency doubling and output together. The whole system finally obtains 532nm green laser which power achieves 202W. The laser does not need any thermal len and thermal double refraction compensation element, having high output power, better beam quality, high doubling efficiency, better stability, widely applied in medical, industry.

Description

technical field [0001] The invention belongs to the technical field of lasers, in particular to a 200W class all-solid-state T-shaped double-cavity combined intracavity frequency-doubling unidirectional overlapping output quasi-continuous green light laser. Background technique [0002] Since the first ruby ​​laser came out in the 1960s, all kinds of lasers and laser technology have developed extremely rapidly, especially the development of high-power all-solid-state solid-state lasers is particularly eye-catching, with its large output energy, high peak power, and higher than CO 2 Gas lasers are widely used in laser material processing, optical storage, laser full-color display, laser medicine, scientific research, communication, national defense, entertainment and other fields due to their short wavelength, reliable operation, and long service life. At present, multi-rod serial connection technology is the main method to improve the output power of all-solid-state lasers, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/082H01S3/08H01S3/109H01S3/117H01S3/16H01S3/0941H01S3/042
Inventor 任兆玉白晋涛贾森
Owner NORTHWEST UNIV(CN)
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