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

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, ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings and deficiencies in the prior art such as low light-to-light conversion efficiency, obvious thermal lens effect, unstable laser output power, and poor beam quality, the technical solution of the present invention is solved in this way: - A first flat-concave cavity consisting of a concave total reflection end mirror and a first flat green output mirror, and a second flat-concave cavity consisting of a second flat-concave total reflection end mirror and a second flat green output mirror , the special feature of the present invention is that the optical path of the first flat-concave cavity and the optical path of the second flat-concave cavity vertically form a T-shaped double-cavity combination cavity, and the horizontal optical path of the first flat-concave total reflection end mirror The first acousto-optic Q-switching crystal, the first laser crystal, the 45° harmonic reflector, the first frequency doubling crystal, and the first planar green light output mirror are respectively arranged in sequence; the second flat-concave sub-cavity is formed by the second The second acousto-optic Q-switching crystal, the second laser crystal, the second harmonic reflector, the second frequency-doubling crystal, and the second flat green light output mirror are placed in sequence on the optical path led by the flat-concave total reflection end mirror. The light output from a laser crystal and the second plane green light output mirror in the vertical direction is superimposed and converged on the 45° harmonic reflector, and input to the first frequency doubling crystal and the first plane green light output mirror sequentially through the 45° harmonic reflector , the first laser crystal and the second laser crystal are all Nd:YAG crystals with the same size and doping, and each light-passing surface is coated with a fundamental frequency light anti-reflection film and cooled by circulating water. On the Nd:YAG side, etc. A plurality of semiconductor laser diode arrays arranged at intervals constitute a high-power first semiconductor pumping component and a second semiconductor pumping component, the first laser crystal and the first semiconductor pumping component and the second laser crystal and the second semiconductor pumping component Constitute two 1064nm laser modules respectively, and are controlled by their respective driving sources

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