Spatially modulated polarimetry based on a vortex retarder and Fourier analysis  

作　　者：Chao Gao Bing Lei 高超;雷兵(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Optics Letters》2021年第2期19-24,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(No.61975235);the Natural Science Foundation of Hunan Province(No.2019JJ40342)。

摘　　要：We report a spatially modulated polarimetry scheme by using a zero-order vortex half-wave retarder(ZVHR)and a spatial Fourier analysis method.A ZVHR is employed to analyze the input polarized light and convert it into a vectorial optical field,and an analyzer is set after the ZVHR to form an hourglass intensity pattern due to the spatial polarization modulation.Then,the input light’s Stokes parameters can be calculated by spatial Fourier analysis of the hourglass pattern with a single shot.The working principle of the polarimeter has been analyzed by the Stokes-Mueller formalism,and some quantitative measuring experiments of different polarization states have been demonstrated.The experimental results indicate that the proposed polarimeter is accurate,robust,and simple to use.

关 键 词：POLARIMETRY Stokes parameters vortex retarder Fourier analysis spatial modulation 

分 类 号：O436.3[机械工程—光学工程]