光学器件微振动引起的光束指向稳定性分析  

Analysis on Beam Directing Stability Problem Caused by Micro-Vibration of Optical Components

作　　者：刘芳[1,2] 徐嘉[1,2] 张燕[1,2] 孙明营[1,2] 朱健强[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]中国科学院研究生院,北京100049

出　　处：《光学学报》2011年第11期247-253,共7页Acta Optica Sinica

基　　金：中以高功率激光技术国际合作研究(2010DFB70490)资助课题

摘　　要：提出一种可以从时域和空域两个方面更准确地表征光束指向稳定性的动态方法,解决大型光学系统中光学器件微振动对光学系统的影响的描述问题。基于实际应用中机械结构的模态分析及微振动对光束的影响,将机械模态和光学系统有机地结合起来,建立了光学器件微振动模型。然后以神光Ⅱ装置中的空间滤波器为研究对象,分析了空间滤波器出射光角度的时间分布和空间分布。A dynamic method is proposed to analyze the beam directing stability in both time and space domains aiming at solving the expression of the effects caused by micro-vibrations of optical components. Based on the structural modal analysis and vibration effects caused by optical components, the vibrational models of optical components are built by combining structural modality and optical system. A spatial filter in SG-II facility is numerically simulated as an example based on the method, and the temporal distribution and spatial distribution are analyzed.

关 键 词：光学器件 光束传输 微振动 概率分布 

分 类 号：TN252[电子电信—物理电子学]