高功率固体激光器的大口径反射镜装配误差分析  

Assembly Error Analysis for Large Aperture Transport Mirror in High Power Solid-State Laser System

作　　者：王辉[1] 黎沁 熊召[2] 袁晓东[2] 姚超[1] 融亦鸣[1] 

机构地区：[1]清华大学机械工程系,北京100084 [2]中国工程物理研究院激光聚变研究中心,绵阳621900

出　　处：《光学学报》2015年第9期254-261,共8页Acta Optica Sinica

基　　金：国家自然科学基金(51205221)

摘　　要：从惯性约束聚变系统高功率固体激光驱动器中具有典型意义的大口径激光传输反射镜的装配结构及其技术精度特点出发,分析了其关键面形误差指标的形成原理,研究了反射镜单元的装配预紧基本力学模型。并在此基础上,进一步针对空间安装状态的反射镜面形无法精密检测难题,提出了"精密检测—数值建模"相综合的面形误差分析与预测方法,以期为我国"神光-III"主机装置大口径反射镜的集成化装校工程提供科学指导方法及有力的技术工具。Large aperture transport mirror is a typical unit in the high power solid-state laser system. Firstly, the principles of large aperture transport mirror＇ s wavefront errors are discussed in detail, according to an analysis on its structure and assembly characters. Then, the fundamental mechanics model to evaluate the surface deformation of mounted mirror is given. And furthermore, a technical framework combined with the methods of field optical measurements and 3D numerical modeling is proposed to predicate the surface profile of spatial installed mirror. The proposed method is verified with a case study. And some assembly problems in SG-III＇s transport mirror are also discussed.

关 键 词：激光器 高功率固体激光器 大口径反射镜 面形误差 精密装配 

分 类 号：TH161[机械工程—机械制造及自动化] TN242[电子电信—物理电子学]