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37单元双压电片变形镜板条激光光束净化
引用本文:晏虎,雷翔,刘文劲,王帅,高源,董理治,杨平,许冰.37单元双压电片变形镜板条激光光束净化[J].强激光与粒子束,2012,24(7):1663-1666.
作者姓名:晏虎  雷翔  刘文劲  王帅  高源  董理治  杨平  许冰
作者单位:1.中国科学院 光电技术研究所 自适应光学研究室, 成都 61 0209;
基金项目:国家自然科学基金,西部之光,中国科学院创新基金
摘    要:为了校正板条激光器输出光束波前像差,改善输出光束质量,提出了基于37单元双压电片变形镜的板条激光光束净化系统。采用柱面反射式单向扩束器使主振荡功率放大结构板条激光器输出光束尺寸与37单元双压电片变形镜有效口径相匹配,利用随机并行梯度下降算法控制双压电片变形镜面形,进行波前像差闭环校正,校正后光束远场归一化桶中功率提高到净化前的2~3倍。

关 键 词:自适应光学系统    双压电片变形镜    板条激光器    光束净化    光束质量
收稿时间:2011/11/25

Beam cleanup of slab laser with 37-element bimorph deformable mirror
Yan Hu , Lei Xiang , Liu Wenjin , Wang Shuai , Gao Yuan , Dong Lizhi , Yang Ping , Xu Bing.Beam cleanup of slab laser with 37-element bimorph deformable mirror[J].High Power Laser and Particle Beams,2012,24(7):1663-1666.
Authors:Yan Hu  Lei Xiang  Liu Wenjin  Wang Shuai  Gao Yuan  Dong Lizhi  Yang Ping  Xu Bing
Institution:1.Laboratory on Adaptive Optics,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;2.Key Laboratory on Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,China;3.Graduate University of Chinese Academy of Sciences,Beijing 100039,China
Abstract:A laser beam cleanup system based on a 37-element bimorph deformable mirror (DM) is presented, to correct the wavefront aberrations of slab laser amplifier and improve the output laser beam quality. The strip-shaped laser beam is expanded by a cylinder mirrors expander to match with the bimorph DM. The stochastic parallel gradient descent (SPGD) algorithm is utilized to optimize the surface of bimorph DM. The normalized power in the bucket (NPIB) of laser beam is enhanced by 2-3 times, after the wave-front aberrations are corrected.
Keywords:adaptive optics system  bimorph deformable mirror  slab laser  beam cleanup  beam quality
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