激光与光电子学进展, 2018, 55 (8): 082601, 网络出版: 2018-08-13
矩形光瞳下双巴比涅型消偏器的设计与分析 下载: 581次
Design and Analysis of Dual Babinet Depolarizer Applied to Rectangular Pupils
物理光学 偏振 消偏器 穆勒矩阵 成像光谱仪 偏振灵敏度 physical optics polarization depolarizer Muller matrix imaging spectrometer polarization sensitivity
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27 μm,满足偏振灵敏度及像质要求。
Abstract
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 is 27 μm. The design requirements of polarization sensitivity and image quality are satisfied.
刘晓林, 李明, 安宁, 唐绍凡, 孙倩. 矩形光瞳下双巴比涅型消偏器的设计与分析[J]. 激光与光电子学进展, 2018, 55(8): 082601. Liu Xiaolin, Li Ming, An Ning, Tang Shaofan, Sun Qian. Design and Analysis of Dual Babinet Depolarizer Applied to Rectangular Pupils[J]. Laser & Optoelectronics Progress, 2018, 55(8): 082601.