基于动态分布的高功率激光器光束指向稳定性分析  

Beam Pointing Stability Analysis Based on Dynamic Distribution for High Power Laser Facility

作　　者：徐嘉[1,2] 刘芳[1,2] 杨朋千[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：《中国激光》2011年第10期1-6,共6页Chinese Journal of Lasers

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

摘　　要：将光束动态分布的概率分析加入到传统稳定性设计过程之中,提出了一种基于动态分布的光束稳定性分析方法,并以大型激光驱动器中的空间滤波器为分析对象,讨论了在不改变光学参数的基础上,如何利用该方法对滤波器的结构特性进行优化。结果表明,该方法能够对元件间的相对参数值提出要求,有别于传统方法仅着眼于提升单个元件的稳定性的设计思路。与传统方法共同运用,同时对光束的动态范围和分布类型进行优化,能够进一步改善系统的稳定性,为装置运行提供稳定可靠的基础平台。The probability analysis of dynamic distribution of beam positioning in high power laser facility is added to traditional stability design,and a stability analysis method based on dynamic distribution is proposed.Taking spatial filter in large laser facility as object,we discuss how to optimize its structural parameters by this method,with its optical parameters being constant.This method is aiming to constraint the relative stability of components in spatial filter,and it is different from the traditional method which is focused on the absolute stability of single components.Together with the traditional method,optimization can be achieved in dynamic range and distribution pattern of the beam at the same time,and a stable and reliable structure will be provided for facility operation.

关 键 词：激光器 光束稳定性 高功率激光器 概率分布 振动 

分 类 号：O435[机械工程—光学工程]