波前畸变对大口径光束相干合成中光束指向探测的影响  

Effect of Wavefront Distortion on Beam Pointing Detection in Coherent Combination of Large Aperture Beams

作　　者：母杰[1,2] 周凯南[1,2] 王逍[1,2] 左言磊[1,2] 曾小明[1,2] 王晓东[1,2] 谢娜[1,2] 周松[1,2] 李志林[1,2,3] 赵丹[1,2] 朱启华[1,2] 粟敬钦[1,2] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]上海交通大学IFSA协同创新中心,上海200240 [3]西安交通大学机械制造系统工程国家重点实验室,陕西西安710054

出　　处：《中国激光》2017年第6期233-237,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(61505188)

摘　　要：为了研究波前畸变对光束指向探测的影响,采用蒙特卡罗方法分别在整口径和不同口径、不同排布的子口径情况下,对光束进行了模拟分析。研究结果表明,当波前畸变的均方根值小于0.163λ时,光束指向探测误差小于0.5μrad;当波前畸变的均方根值小于0.234λ时,光束指向探测误差小于1μrad。可选取波前畸变相对较小的子光束区域来计算整口径的光束指向。In order to study the effect of wavefront distortion on the beam pointing detection, the simulation analysis of beams is done with Monte Carlo method under the conditions of entire aperture and sub-apertures with different sizes and arrangements. The study results show that, when the root-mean-square of wavefront distortion is less than 0. 163λ, the beam pointing detection error is under 0.5 μrad. When the root-mean-square of the wavefront distortion is less than 0. 234λ, the beam pointing detection error is under 1 μrad. Sub-beam areas with relatively low wavefront distortion are suitable for calculating the beam pointing of an entire aperture.

关 键 词：激光技术 相干合成 蒙特卡罗方法 光束指向探测 波前畸变 

分 类 号：O436[机械工程—光学工程]