Efficiency of frequency conversion of high power laser and KDP crystal clamping method

Han Yan; Weifeng Du; Guoqing Pei; Tinghai Qin; Lang Ye; Xu Xu

doi:10.1117/12.2268297

12 May 2017 Efficiency of frequency conversion of high power laser and KDP crystal clamping method

Han Yan, Weifeng Du, Guoqing Pei, Tinghai Qin, Lang Ye, Xu Xu

Proceedings Volume 10173, Fourth International Symposium on Laser Interaction with Matter; 1017327 (2017) https://doi.org/10.1117/12.2268297
Event: 4th International Symposium on Laser Interaction with Matter, 2016, Chengdu, China

Abstract

In the high power solid laser driver, the frequency conversion unit is of strict requirement to meet the drive condition of ICF. The performance of large caliber KDP crystal, which is the core of frequency conversion of laser, is a vital aspect affecting the overall technical index of the laser driver. In order to get a higher efficiency of frequency conversion, KDP crystal must keep a better surface condition, which asks for high-quality assemblage and adjustment. The current method used in engineering has insufficient knowledge and recognition on surface deformation control of the crystal. Meanwhile, the method itself is of low efficiency on clamping, and lacks of protection for the crystal. Thus, in this article an investigation of crystal clamping method with lower force was performed, factors affecting the surface of crystal were explored, through both imitation and experiment. The clamping method was redesigned and the frequency conversion efficiency was tested. Meanwhile, with the new method, clamping efficiency increases, the optical performance of crystals improves, and the crystals get better protection.

Citation Download Citation

Han Yan, Weifeng Du, Guoqing Pei, Tinghai Qin, Lang Ye, and Xu Xu "Efficiency of frequency conversion of high power laser and KDP crystal clamping method", Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 1017327 (12 May 2017); https://doi.org/10.1117/12.2268297

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