矩形光瞳下双巴比涅型消偏器的设计与分析  

Design and Analysis of Dual Babinet Depolarizer Applied to Rectangular Pupils

作　　者：刘晓林 李明[1] 安宁[1] 唐绍凡[1] 孙倩[1] Liu Xiaolin;Li Ming;An Ning;Tang Shaofan;Sun Qian(Beijing Key Laboratory of Advanced Optical Remote Sensing Technology,Beijing Institute of Space Mechanics ＆Electricity,Beijing 100094,China)

机构地区：[1]北京空间机电研究所先进光学遥感技术北京市重点实验室,北京100094

出　　处：《激光与光电子学进展》2018年第8期442-447,共6页Laser & Optoelectronics Progress

基　　金：科技部国家重点研发计划(2016YFB0500500)

摘　　要：建立了矩形光瞳下适用于双巴比涅型消偏器的消偏理论及数值计算模型,弥补了当前设计理论仅适用于圆形光瞳的不足。设计了一种适用于矩形光束口径且高度可靠的双巴比涅型消偏器。在确定最佳结构参数的基础上,分析了晶体折射率和中心厚度差的误差要求。结果表明,退偏器出射光的最大残余偏振度小于2%,四像最大间距约为27μm,满足偏振灵敏度及像质要求。The depolarization theory and numerical calculation model for a dual Babinet depolarizer applied to rectangular pupils are built,which makes up the deficiency of the current design theories only suitable for circular pupils.A type of dual Babinet depolarizer with high reliability which can be applied to rectangular pupils is designed.On the basis of the optimal structural parameters,the error requirements of the refractive index and the central thickness difference of crystals are analyzed.The results show that the maximum residual polarization degree of the output light from the depolarizer is less than 2% and the maximum separation distance for the four images is27μm.The design requirements of polarization sensitivity and image quality are satisfied.

关 键 词：物理光学 偏振 消偏器 穆勒矩阵 成像光谱仪 偏振灵敏度 

分 类 号：O436[机械工程—光学工程]