大遮拦比薄管激光环域像差校正方法  

Method for Annular Aberration Correction of Large-Aperture Thin-Wall Tube Lasers

作　　者：余江川 田博宇 钟哲强[1] 张彬[1] 张小民[2] Yu Jiangchuan;Tian Boyu;Zhong Zheqiang;Zhang Bin;Zhang Xiaomin(School of Electronics and Information Engineering,Sichuan University,Chengdu,Sichuan 610064,China;China Academy of Engineering Physics,Mianyang,Sichuan 621999,China)

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]中国工程物理研究院,四川绵阳621999

出　　处：《中国激光》2020年第9期188-197,共10页Chinese Journal of Lasers

基　　金：四川省科技计划资助(2018JY0553);科技部创新人才推进计划重点领域创新团队项目(2014RA4051);中国科学院自适应光学重点实验室基金(LAOF1801)。

摘　　要：针对高功率大遮拦比窄环薄管激光的环域像差校正需求,提出一种基于新型环形边缘驱动变形镜的环域像差校正方法。利用环形边缘驱动变形镜构建自适应光学闭环控制系统,以实现对高功率大遮拦比窄环薄管激光波前的校正。使用新型的环形边缘驱动变形镜来验证所提方法对单一环域低阶像差的校正能力,并分析其对大遮拦比薄管激光的校正效果。实验结果表明,所提的环域像差校正方法能够有效校正大遮拦比窄环薄管激光的波前畸变,显著提高光束质量。Aiming at the requirements of high-power large-blocking ratio narrow-ring thin-tube lasers for ring aberration correction, a new ring-shaped edge-driven deformable mirror-based method for ring aberration correction is proposed herein. An adaptive optics closed-loop control system is constructed using the ring-shaped edge-driven deformable mirror to correct the wavefront of the high-power, large-blocking, thin-tube laser. A novel ring-shaped edge-driven deformable mirror is used to verify the correction ability of the proposed method for single-circular low-order aberrations, and analyze its correction effect on thin tube lasers with a large obstruction ratio. Experimental results reveal that the proposed ring aberration correction method can effectively correct the wavefront distortion of a thin tube laser with a large obstruction ratio and a narrow ring, significantly improving the beam quality.

关 键 词：激光光学 自适应光学 环域像差 环形边缘驱动变形镜 大遮拦比环形光束 

分 类 号：TN248[电子电信—物理电子学] O439[机械工程—光学工程]