腔镜位置变形镜波前补偿与实验研究  

Application of Cavity Deformable Mirror in Petawatt Facility with U-Turn Reverser

作　　者：代万俊[1] 胡东霞[1] 周维[1] 赵军普[1] 张鑫[1] 张崑[1] 蒋学君[1] 邓武[1] 黄小军[1] 朱启华[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：《中国激光》2009年第11期2920-2923,共4页Chinese Journal of Lasers

基　　金：国家863计划资助课题

摘　　要：在多程放大系统中,激光一般要经过腔反射镜两次,将变形镜置于腔反射镜位置能够有效提高其校正量。在某些多程放大系统设计过程中,为了降低输出端激光的像差,采用了90°旋转的"U"型反转器和变口径技术,激光两次经过腔反射镜的位置和坐标关系都发生了变化。采用数学的方法对这种情况下腔反射镜位置的面形解存在性进行了证明,并在带有90°旋转"U"型反转器的星光-拍瓦(XG-PW)装置上对腔反射镜位置大口径变形镜的应用进行了实验验证。理论和实验研究结果为后续大型激光装置的自适应光学波前补偿方案设计提供了依据。For beam passing through cavity mirror twice in multi-pass amplifier laser facility,deformable mirror is often applied at location of cavity mirror for the goal of improving correction range. However,multi-pass amplifier with U-turn for improving optical quality has its own feature different from other facilities. Beam has 90° rotation and size change between 1-2 pass and 3-4 pass propagation. A new mathematical method is described to prove the solution existence of cavity deformable mirror and the application of cavity deformable mirror is verified in Xingguang-Petawatt （XG-PW）,facility with U-turn reverser. The results are important for the adaptive optics system design of succeeding large-scale laser facility.

关 键 词：自适应光学 多程放大器 “U”型反转器 腔反射镜 变形镜 

分 类 号：TN248.1[电子电信—物理电子学] TL632.1[核科学技术—核技术及应用]