大口径反射镜低附加波前控制技术  

Low addition wavefront control technology of large aperture mirror

作　　者：张军伟[1] 吴文龙[1] 傅学军[1] 陈良明[1] 洪建华[1] 林东晖[1] 周海[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2013年第12期3193-3196,共4页High Power Laser and Particle Beams

基　　金：国家重大科技专项支撑项目

摘　　要：为降低惯性约束聚变装置中大口径反射镜在重力作用下附加面型对光束质量的影响,对大口径反射镜镜背支撑技术进行了研究。经支撑结构优化,大口径反射镜由重力导致的附加面型从0.5μm降为0.26μm。对大口径反射镜镜体的打孔工艺、镜体与支撑架联接工艺及镜架结构进行了研究,并加工了样机进行验证,从实际测试结果来看,采用的反射镜打孔及粘结工艺对反射镜面型的影响可以忽略,反射镜镜架结构可以满足反射镜支撑要求,反射镜采用背支撑技术可以有效降低重力带来的附加波前。To decrease the addition wavefront of large aperture mirror caused by gravity influence on beam quality in inertial confinement fusion facility, the back support technology is researched in this paper. By support structure optimization, the addi tion wave front caused by gravity of large aperture decreases from 0.5 micron to 0.26 micron. In this paper, the drill and the join technology of the mirror and support structure and the mirror support structure is researched and the prototype is developed to validate the technology. The test indicates that the wavefront of the mirror caused by the drill and join technology can be ignored and the mirror support structure can satisfy the mirror requirement. The addition wavefront caused by gravity can be well con- trolled by mirror back support technology.

关 键 词：惯性约束聚变 大口径反射镜 波前控制 背支撑 测试 

分 类 号：TH74[机械工程—光学工程]