光学精密工程2023，Vol.31Issue(22)：3256-3265,10.DOI:10.37188/OPE.20233122.3256
双编码快照式光谱偏振成像系统偏振优化方法
Research on polarization optimization of dual-coded spectropolarimeter
摘要
Abstract
A multiparameter model-guided polarization optimization method is proposed for polarization ef-fect correction of a dual-coded snapshot spectropolarimeter.A full-link polarization effect model of the spectropolarimeter based on a digital micro-mirror device(DMD),prism-grating-prism(PGP),micro-po-larizer array(MPA)detector,and multi-film system is established.Bidirectional attenuation of the spec-tropolarimeter with incident partially polarized light is analyzed.The relationship among wavelength,po-larization degree of the incident light,and polarization effect is revealed.The polarization effect of the spectropolarimeter is optimized through targeted control of the refractive index and incidence angle,grat-ing refractive index and constant,prism refractive index and top angle,and film refractive index and film thickness when the spectral line bending meets the reconstruction requirements.The simulation results show that the structural similarity(SSIM)of the optimized system is>0.8 and that the relative error of the system polarization effect is<4%.The polarization effect is reduced by at least 6%compared with that before optimization.When the polarization of the incident light is constant,the polarization effect of the system is inversely proportional to the wavelength.The experimental acquisition of spectral polariza-tion reconstructed images of typical materials under a single exposure improves the relative error by at least 14.7%for metal and 63.6%for plastic.The necessity and feasibility of the proposed polarization optimi-zation method are verified.This study lays a theoretical foundation for high-precision acquisition of multidi-mensional data in dual-coded spectropolarimeters.关键词
光谱偏振成像/偏振效应/二向衰减/穆勒矩阵Key words
spectropolarimeter/polarization effect/bidirectional attenuation/Mueller matrix分类
物理学引用本文复制引用
王稼禹,史浩东,李英超,付强,王超,刘振伟,姜会林..双编码快照式光谱偏振成像系统偏振优化方法[J].光学精密工程,2023,31(22):3256-3265,10.基金项目
吉林省教育厅科学技术研究项目资助(No.JJKH20230813KJ) （No.JJKH20230813KJ）
国家自然科学基金资助项目(No.61890960) （No.61890960）
