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17 May 2019 Performance improvement method for large aperture frequency conversion crystal
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Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111700G (2019) https://doi.org/10.1117/12.2532040
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China
Abstract
In huge-scale high peak power laser facility, the frequency conversion unit is responsible for the conversion of fundamental infrared wave at 1053nm into ultraviolet wave at 351nm. In this paper, the mechanism of service performance degradation of frequency doubling crystal is revealed by combining field experiments and numerical simulations. Moreover, we propose a flexure support method that can effectively reduce crystal surface distortion. Further, an experiment platform for offline mounting of frequency conversion crystal is built, and the mechanical and optical characteristics are verified by the experimental results. Finally, online verification is carried out in China’s high peak power laser facility. The results show that the proposed mounting method can significantly modify the crystal surface figure, improve its online performance and increase the highest efficient output power of high peak power laser facility.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zheng Zhang, Weifeng Du, Dongya Chu, Lang Ye, Hai Zhou, and Hui Wang " Performance improvement method for large aperture frequency conversion crystal", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111700G (17 May 2019); https://doi.org/10.1117/12.2532040
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