离轴式共口径激光通信光学系统设计  

Design of Laser Communication Optical System with Off-Axis Common Aperture

作　　者：王蕴琦 刘伟奇[1,2] 付瀚毅 高世杰[1,3] 吴佳彬[3] 

机构地区：[1]中国科学院大学长春光学精密机械及物理研究所研究生部,吉林长春130033 [2]中国科学院长春光学精密机械及物理研究所空间一部,吉林长春130033 [3]中国科学院长春光学精密机械及物理研究所光电探测部,吉林长春130033

出　　处：《激光与光电子学进展》2018年第1期174-181,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51605465);国防基础科研计划项目(B1720132001);吉林省科技发展计划项目(20150101040JC)

摘　　要：根据激光通信及共口径技术基本原理,对共口径自由空间激光通信光学系统的参数进行了分析,并设计得到了一套离轴式共口径激光通信光学系统。系统光学天线采用离轴两反结构,有效通光口径为160mm,光束压缩比为10…1,跟瞄系统采用无焦望远结构,最大跟踪视场为±1mrad,最佳跟踪精度为2μrad。利用Zemax软件对系统进行了光线追迹和性能分析,结果表明系统性能优良,波像差优于0.1λ(λ=632.8nm),并且结构紧凑,公差合理,装配简单,能满足实际应用的需求,对实现中地球轨道(MEO)自由空间激光通信具有一定的工程意义。According to the basic principle of laser communication and common aperture technology, the parameters of the optical system of common aperture free space laser communication are analyzed, and an off-axis common aperture laser communication optical system is designed. With an off-axis two-mirror structure, the optical antenna of the system has an effective aperture of 160 mm and the beam compression ratio is 10：1. Tracking and pointing system adopts non-focus telescope structure. The maximum tracking field of view is ± 1 mrad, and the best tracking accuracy is 2 μrad. Based on Zemax software, the ray tracing and performance analysis are given. The results show that the wavefront error of the system is better than 0.1λ （λ =632.8 nm）, so the performance of the system is excellent. The system is of the compact structure, the reasonable tolerance and the simple assembly. The system can meet the needs of practical application and has certain engineering significance for the realization of medium earth orbit （MEO） free space laser communication.

关 键 词：光通信 激光通信 共口径 接收和发射系统 望远系统 跟瞄系统 

分 类 号：O437.1[机械工程—光学工程]