中国激光, 2014, 41 (6): 0602008, 网络出版: 2014-05-26   

两端支撑夹持结构参数对三倍频转换效率的影响

Influence of Structure Parameters for Two Sides Support on Third Harmonic Conversion Efficiency
作者单位
1 四川大学电子信息学院, 四川 成都 610041
2 中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
摘要
在高功率固体激光器的终端光学组件中,为了提升三倍频转换效率,对大口径薄型KDP晶体采取两侧支撑的夹持方法,并利用有限元分析软件建立了夹持系统的仿真模型。在此基础上,计算分析了晶体以不同倾斜角度放置时,支撑条数目和长度等夹持系统结构参数对晶体附加面形、相位匹配角及三倍频转换效率的影响。研究结果表明:晶体两侧支撑条总数为4时,大口径薄型KDP晶体附加面形的峰谷值和均方根值、晶轴变化的平均值和三倍频转换效率随支撑条长度的变化不大,且可获得理想的三倍频转换效率。解决了反复调试KDP晶体面形质量的问题而缩短了工程装校时间。
Abstract
In final optics assembly of high-power solid-state laser, in order to improve the third harmonic generation (THG) efficiency, the method of both sides support for ultra-thin KDP crystals with large-aperture is adopted, and simulation model, is built using finite element analysis software. On this basis, the influence of parameters of clamping system including the number and length of support bars on the additional surface shape of KDP crystals, phase matching angle and THG efficiency are calculated and analyzed for the case of KDP crystals placed at different tilt angles. The results show that, when the number of support bars is four, the peak valley (PV) and root-mean-square (RMS) values of additional surface profile of ultra-thin KDP crystals with large-aperture, the mean value of crystal axis and THG efficiency almost keep unchanged with the length of support bars and an ideal THG efficiency is achieved. Consequently, the problems of repeating test on the quality of KDP crystals′ surface profile can be solved, and the time for engineering assembly and calibration can be reduced.
参考文献

[1] 於海武, 郑万国, 贺少勃, 等. 高功率钕玻璃固体激光放大器物理性能优化设计[J]. 中国激光, 2002, 29(s1): 81-85.

    Yu Haiwu, Zheng Wanguo, He Shaobo, et al.. Physical performance optimization for high power NdGlass solid state laser amplifiers[J]. Chinese J Lasers, 2002, 29(s1): 81-85.

[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 quality of high energy laser system[J]. High Power Laser and Particle Beams, 2010, 22(5): 945-947.

[3] 代守军, 何兵, 周军, 等. 高功率散热技术及高功率光纤激光放大器[J]. 中国激光, 2013, 40(5): 0502003.

    Dai Shoujun, He Bing, Zhou Jun, et al.. Cooling technology of high-power and high-power fiber laser amplifier[J]. Chinese J Lasers, 2013, 40(5): 0502003.

[4] 李平, 梁樾, 徐冰, 等. 高功率激光装置主放大器的增益稳定性研究[J]. 中国激光, 2012, 39(1): 0102007.

    Li Ping, Liang Yue, Xu Bing, et al.. Study on gain stability of main amplifier in high power laser facility[J]. Chinese J Lasers, 2012, 39(1): 0102007.

[5] 李恪宇, 贾怀庭, 王成程, 等. 惯性约束核聚变驱动器高强度三倍频系统输出能力分析[J]. 中国激光, 2006, 23(7): 903-909.

    Li Keyu, Jia Huaiting, Wang Chengcheng, et al.. Output-ability analysis of high-intensity third harmonic generation system for ICF driver[J]. Chinese J Lasers, 2006, 23(7): 903-909.

[6] 贾凯, 熊召, 杨闯, 等. 大口径KDP晶体实现高效三倍频转换的新型支撑结构[J]. 中国激光, 2013, 40(7): 0702004.

    Jia Kai, Xiong Zhao, Yang Chuang, et al.. A mounting configuration for efficient third harmonic conversion of KDP crystals with large aperture[J]. Chinese J Lasers, 2013, 40(7): 0702004.

[7] 张军勇, 孙美智, 张艳丽, 等. 神光II终端光学组件的频率变换逆问题研究[J]. 光学学报, 2012, 32(9): 0916003.

    Zhang Junyong, Sun Meizhi, Zhang Yanli, et al.. Inverse problem of frequency conversion at SG-II final optical assemble[J]. Acta Optica Sinica, 2012, 32(9): 0916003.

[8] 季来林, 刘崇, 唐顺兴, 等. 大口径KDP晶体加工相位扰动与三次谐波转换[J]. 中国激光, 2012, 39(5): 0502012.

    Ji Lailin, Liu Chong, Tang Shunxing, et al.. Phase perturbation of large aperture KDP crystal manufacture and effects on third harmonics generation[J]. Chinese J Lasers, 2012, 39(5): 0502012.

[9] P Wegner, J Auerbach, T Biesiada, et al.. NIF final optics system: frequency conversion and beam conditioning[C]. SPIE, 2004, 5341: 180-189.

[10] J M Auerbach, C E Barker, S A Cotuture, et al.. Modeling of frequency doubling and tripling with converter refractive index spatial non-uniformities due to gravitational sag[C]. SPIE, 1999, 3492: 472-479.

[11] 余文峰, 孙峰, 程祖海, 等. 夹持方式对镜面热变形及偏转的影响[J]. 强激光与粒子束, 2005, 17(1): 29-32.

    Yu Wengfeng, Sun Feng, Cheng Zuhai, et al.. Effects on the mirror′s thermo-deformation and deflection of different supporting way[J]. High Power Laser and Particle Beams, 2005, 17(1): 29-32.

[12] J M Auerbach, C E Barker, S C Burkhart, et al.. Frequency converter development for the National Ignition Facility[C]. SPIE, 1999, 3492: 392-405.

[13] 崔凯洪, 张彬, 贾凯, 等. 夹持方式对频率转换KDP晶体面形的影响[J]. 强激光与粒子束, 2011, 23(6): 1538-1542.

    Cui Kaihong, Zhang Bin, Jia Kai, et al.. Effect of clamps on surface profiles of harmonic generation KDP crystals[J]. High Power Laser and Particle Beams, 2011, 23(6): 1538-1542.

[14] O Lubin, C Gouedard. Modeling of the effects of KDP crystal gravity sag on third-harmonic generation[C]. SPIE, 1999, 3492: 802-808.

[15] 王芳, 粟敬钦, 李恪宇, 等. KDP晶体折射率不均匀性对三倍频转换效率的影响[J]. 强激光与离子束, 2007, 19(5): 746-749.

    Wang Fang, Su Jingqin, Li Keyu, et al.. Influence of KDP crystals. refractive-index non-uniformities on 3ω conversion efficiency[J]. High Power Laser and Particle Beams, 2007, 19(5): 746-749.

张洋, 熊召, 徐旭, 叶朗, 袁晓东, 周海, 张彬. 两端支撑夹持结构参数对三倍频转换效率的影响[J]. 中国激光, 2014, 41(6): 0602008. Zhang Yang, Xiong Zhao, Xu Xu, Ye Lang, Yuan Xiaodong, Zhou Hai, Zhang Bin. Influence of Structure Parameters for Two Sides Support on Third Harmonic Conversion Efficiency[J]. Chinese Journal of Lasers, 2014, 41(6): 0602008.

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