长时间出光条件下反射镜的热变形对光束质量的影响

贺敏波; 任伟艳; 张世强; 孙艳宏; 张政

doi:doi:10.3788/lop50.122302

激光与光电子学进展, 2013, 50 (12): 122302, 网络出版: 2013-11-13

长时间出光条件下反射镜的热变形对光束质量的影响下载： 515次

Influence of Mirror Thermal Deformation on Beam Quality under Laser Long-Time Irradiation

论文大纲

贺敏波 ^*任伟艳张世强孙艳宏张政

作者单位

西北核技术研究所, 陕西西安 710024

光学器件反射镜热变形 Zernike像差光束质量 optical devices mirror thermal deformation Zernike aberration beam quality

摘要

基于有限元Comsol Multiphysics软件，模拟计算了长时间出光条件下反射镜的温度分布和热变形分布。对热变形引起的波像差采用前65阶Zernike模式分解，计算了不同时刻对应的光束质量因子，结果表明：光束质量因子主要来源于离焦像差的贡献，其他像差的影响可以忽略。在此基础上建立了光束质量因子与辐照时间的指数拟合关系，其均方根误差为0.0052。

Abstract

The temperature field and thermal deformation distributions of mirror under laser long-time irradiation are calculated and analyzed by using Comsol Multiphysics software. After presenting the wave aberration of mirror with the first 65 order Zernike polynomials, the beam quality factor β at different time is obtained. The results show that beam quality factor β is mainly composed of defocusing aberration, while other aberrations can be neglected. Then an exponential relationship between beam quality factor β and laser irradiation time is offered with the value 0.0052 of room-mean-square error.

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贺敏波, 任伟艳, 张世强, 孙艳宏, 张政. 长时间出光条件下反射镜的热变形对光束质量的影响[J]. 激光与光电子学进展, 2013, 50(12): 122302. He Minbo, Ren Weiyan, Zhang Shiqiang, Sun Yanhong, Zhang Zheng. Influence of Mirror Thermal Deformation on Beam Quality under Laser Long-Time Irradiation[J]. Laser & Optoelectronics Progress, 2013, 50(12): 122302.

长时间出光条件下反射镜的热变形对光束质量的影响下载： 515次

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