Modified Sagnac imaging spectropolarimeter for full linear Stokes parameters

作     者：Gao, Peng Hu, Xiaochen Guo, Guanghai Kang, Yongqiang Ai, Jingjing Wang, Xia 

作者机构：Qingdao Univ Sci & Technol Shandong Adv Optoelect Mat & Technol Engn Lab Coll Math & Phys Sci Qingdao 266061 Peoples R China Shanxi Datong Univ Inst Solid State Phys Datong 037009 Peoples R China Xi An Jiao Tong Univ Sch Elect & Informat Engn Inst Space Opt Xian 710049 Shaanxi Peoples R China 

出 版 物：《EPL》 (欧洲物理学快报)

年 卷 期：2018年第124卷第5期

页      面：54003-54003页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China [61605098, 11704213] Natural Science Foundation of Shandong Province [ZR2017PD004] 

主　　题：Imaging and optical processing Modulation and optical transfer functions Image forming and processing 

摘      要：A modified Sagnac imaging spectropolarimeter is conceptually described. It consists of a spectral-polarimetric modulator, a modified Sagnac interferometer with large optical path difference, and a CCD camera. This design modulates the Stokes components of the input light into different wave numbers and obtains the modulated interferogram in snapshot mode, and the spectra or the Stokes components can be separated awl demodulated from the interferogram. The performance of the system is demonstrated through a numerical simulation, and a novel method is proposed to detect the polarization parameters including the degree of polarization and polarization direction for eliminating the aliasing effects between linear Stokes parameters. Compared with the existing imaging spectrometers, the modified Sagnac imaging spectropolarimeter can acquire one-dimensional spatial information and its full linear spectropolarimetric information in one exposure, and sonic other spatial information can be obtained by push-broom mode.