夹持方式对KDP晶体三倍频转换效率的影响

针对压条固定方式、粘胶固定方式和全外围夹持方式进行理论建模和数值计算分析，并讨论了不同夹持方式的优缺点及其对KDP晶体面形和三倍频转换效率的影响。研究结果表明：晶体面形形变对高斯光束三倍频转换效率的影响明显小于平面波时的情况。当入射基频光光强为6 GW·cm-2时，对于平面波的情况，压条固定方式、粘胶固定方式和全外围夹持方式3种夹持方式相对于不考虑夹持作用时的三倍频转换效率分别减小7.5%，9.0%和7.2%；对于高斯光束的情况，三倍频转换效率分别减小了1.3%，1.0%和1.5%。

Abstract

Theoretical modeling has been used to discuss advantages and disadvantages among the squash fixed mode, the silica fixed mode and the complete periphery clamping mode in this paper. Besides, numerical calculation has been used to analyze the influence on KDP surface and conversion efficiency. The results show that the conversion efficiency reduction of Gaussian beam is less than that of plane wave caused by surface deformation. when the intensity of fundamental frequency laser is up to 6 GW·cm-2, the conversion efficiencies reduce 7.5%, 9.0% and 7.2% to plane wave, respectively; and the conversion efficiencies reduce 1.3%, 1.0% and 1.5% to Gaussian beam, respectively.

参考文献

[1] 黄小军, 魏晓峰, 彭翰生, 等. 20 TW超短脉冲激光装置的研制［J］. 强激光与粒子束，2003，15(12): 1991-1994.(Huang Xiaojun, Wei Xiaofeng, Peng Hansheng, et al. Design and characterization of 20 TW Ti: Sapphire laser system. High Power Laser and Particle Beams,2003,15(12): 1991-1994)

[2] 杜祥琬. 影响高能激光系统核心特征量的要素［J］. 强激光与粒子束，2010，22(5): 945-947.(Du Xiangwan. Factors influencing key characteristic quantity of high energy laser system.High Power Laser and Particle Beams,2010,22(5): 945-947)

[3] Wang Tao, Zhang Tingyu, Zhu Heyuan, et al. Analysis of beam-quality degradation in nonlinear frequency conversion［J］.Journal of the Optical Society of America B,2002,19(5): 1101-1106.

[4] Alford W J, Smith A V. Frequency-doubling broadband light in multiple crystals［J］.Journal of the Optical Society of America B,2001,18(4): 515-523.

[5] English R E, Miller J J, Lawman C, et al. Optical system design［R］. UCRL-LR-105821, 1997.

[6] Bercegol H. Laser damage phenomena relevant to the design and operation of an ICF laser driver［J］.Journal of Physics: Conference Service,2008,112: 032013.

[7] Auerbach J M. Frequency conversion modeling ［R］. UCRL-LR-105821, 1996.

[8] Olivier L. Modeling of the effects of KDP crystals gravity sag on third harmonic generation ［C］//Proc of SPIE. 1999,3492: 802-808.

[9] Nye J F. Physical properties of crystal［M］. Oxford: Clarendon Press, 1985: 17-18.

贾凯, 袁晓东, 徐旭, 曹庭分, 熊召, 崔凯洪, 徐攀, 张彬. 夹持方式对KDP晶体三倍频转换效率的影响[J]. 强激光与粒子束, 2011, 23(6): 1553. Jia Kai, Yuan Xiaodong, Xu Xu, Cao Tingfen, Xiong Zhao, Cui Kaihong, Xu Pan, Zhang Bin. Influence of clamping modes in KDP crystal on conversion efficiency of third harmonic generation[J]. High Power Laser and Particle Beams, 2011, 23(6): 1553.

夹持方式对KDP晶体三倍频转换效率的影响

关于本站 Cookie 的使用提示

全站搜索

夹持方式对KDP晶体三倍频转换效率的影响

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索