基于小口径反射镜的大口径拼接光栅压缩器设计  

Compressor design for large-aperture tiled-grating based on a small-size mirror

作　　者：张森[1,2] 张军伟[2] 周忆[1] 王逍[2] 母杰[2] 粟敬钦[2] 胡东霞[2] Zhang Sen;Zhang Junwei;Zhou Yi;Wang Xiao;Mu Jie;Su Jingqin;Hu Dongxia(College of Mechanical Engineering,Chongqing University,Chongqing 400030,China;Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]重庆大学机械工程学院,重庆400030 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《红外与激光工程》2018年第11期343-350,共8页Infrared and Laser Engineering

基　　金：国家自然科学基金(61308040)

摘　　要：为实现大口径拼接光栅拼接误差的高频高精度补偿的工程应用,提出了一种基于小口径反射镜补偿大口径拼接光栅压缩器拼接误差的方法。基于双程Z型压缩器,分析了小口径反射镜补偿量与拼接误差的关系,采用光线追迹法和夫琅禾费远场衍射原理定量计算了各拼接误差补偿后对远场能量分布的影响,证明了该方法原理的正确性,并得到了直接驱动光栅与反射镜补偿时的各误差容限,结果表明该方法能极大降低拼接光栅的精度要求。To realize the engineering application of the high frequency and high precision tiling error compensation,a novel method for error compensation of large-aperture tiled-grating compressor was presented by using a small-aperture mirror.The relationship between the amount of mirror compensation and the tiling error was analyzed for two-pass Z-type compressor.The influence of the compensated tiling error on the focus energy was quantitatively compared with the numerical simulations,which was combined with the ray-tracing method and principle of Fraunhofer far field diffraction.The validity was verified and the error tolerances for direct drive and mirror compensation were obtained.The results show that this method can decrease the precision demand significantly for tiled-grating.

关 键 词：衍射光学 光学设计 光脉冲压缩 拼接光栅 超快光学 

分 类 号：O436[机械工程—光学工程]