空间振幅调制偏振光谱仪调制模块角度参数优化  

Optimization of Angle Parameters of Modulation Module for Spatial Amplitude Modulation Polarization Spectrometer

作　　者：冀海月 李双 向光峰[1,2,3] 韩琳 许智龙 洪津 Ji Haiyue;Li Shuang;Xiang Guangfeng;Han Lin;Xu Zhilong;Hong Jin(Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,Anhui,China;University of Science and Technology of China,Hefei 230026,Anhui,China;Key Laboratory of Optical Calibration and Characterization,Chinese Academy of Sciences,Hefei 230031,Anhui,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026 [3]中国科学院通用光学定标与表征技术重点实验室,安徽合肥230031

出　　处：《激光与光电子学进展》2023年第19期126-132,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金委员会-中国科学院天文联合基金项目(U1331111);王宽诚率先人才计划“卢嘉锡国际合作团队项目”(GJTD-2018-15)。

摘　　要：为使空间振幅调制偏振光谱仪对系统误差具有最小的灵敏度,以测量矩阵条件数作为目标函数,采用遗传算法对仪器调制模块中双复合光楔晶轴方位角和偏振片方位角的优化组合进行仿真分析,并给出了相应的最优角度组合。以偏振度测量精度为评价函数,在给定的器件误差范围内,对多种不同角度组合设置进行仿真实验。仿真结果表明,当仪器角度参数组合的测量矩阵条件数为1.733时,偏振度测量精度优于0.01的概率为98%,比测量矩阵条件数为1.966和3.257的角度参数组合的概率分别提高了23%和64%。该研究为空间振幅调制偏振光谱仪元件参数设计与选取提供了理论依据。In order to make the spatial amplitude modulation polarization spectrometer have the minimum sensitivity to the system error,we take the condition number of the measurement matrix as the objective function,and use the genetic algorithm to simulate and analyze the optimal combination of the double composite optical wedge crystal axis azimuth and the polarizer azimuth in the modulation module of the instrument,and give the corresponding optimal angle combination.With the measurement accuracy of the degree of polarization as the evaluation function,the simulation experiment is carried out for a variety of different angle combinations within the given device error range.Simulation results show that According to the simulation results,when the measurement matrix condition number of the instrument angle parameter combination is 1.733,there is a 98% chance that the polarization degree measurement accuracy will be better than 0.01,this probability is 23% and 64% higher than the probability for the angle parameter combination with the measurement matrix condition number of 1.966and 3.257,respectively.This study provides a theoretical basis for the design and selection of the parameters of the spatial amplitude modulation polarization spectrometer components.

关 键 词：测量 偏振 空间调制 复合光楔 条件数 

分 类 号：TH744[机械工程—光学工程]