脉冲激光作用下金属反射镜热力耦合数值模拟  

Thermo-mechanical Coupling Simulation of Metal Mirror Coatings Subjected to Irradiation of Pulse Laser

作　　者：罗鹏晖[1] 彭玉峰[2] 毕小群[2] 张毅[2] 程祖海[3] 

机构地区：[1]南阳理工学院电子与电气工程系,河南南阳473005 [2]河南师范大学物理与信息工程学院,河南新乡453007 [3]华中科技大学武汉光电国家实验室激光部,武汉430074

出　　处：《河南师范大学学报（自然科学版）》2008年第5期58-60,共3页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家重大基础研究计划(973计划)资助课题(51328)

摘　　要：利用有限元法对单脉冲激光作用下铜基Ni/Au反射镜的热力耦合以及温度场分布进行了数值模拟,得出了在不同功率的单脉冲激光照射下的温度场和应力分布,并对脉冲功率密度与镜面最大温升以及膜层最大应力的关系进行了分析.Copper mirrors with Ni/Au coatings has been widely used in intense laser systems such as CO2 lasers. Thermo-mechanical coupling characteristics of Ni/Au coatings of Cu mirrors are numerically simulated by use of finite element methods. The temperature and thermal stress distributions of the coatings are obtained under irradiation of single-pulse laser with various energies. Moreover, the relations between the maximum stress of coatings and single-pulse laser power density are analyzed and discussed.

关 键 词：金属膜反射镜 热力耦合 有限元法 

分 类 号：O532.25[理学—等离子体物理]