关键词: 双折射晶体/
穆勒矩阵/
快拍成像测偏技术/
光学系统分析
English Abstract
Principle analysis of snapshot Mueller matrix imaging polarimeter using birefringent crystal
Cao Qi-Zhi1,2,4,Yuan Chang-An2,
Hu Bao-Qing2,
Ren Wen-Yi3,5,
Zhao Yin-Jun2,
Zhang Jing1,2,4,
Li Jian-Ying1,
Deng Ting1,
Mingwu Jin4
1.College of Physics and Electronic Engineering, Guangxi Teachers Education University, Nanning 530023, China;
2.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education and Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Guangxi Teachers Education University, Nanning 530023, China;
3.School of Science Northwest A & F University, Yangling 712100, China;
4.Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA;
5.Department of Electrical and Computer Engineering, University of Delaware, Newark, DE 19716, USA
Fund Project:Project supported by the National Natural Science Foundation of China (Grant Nos. 11664004, 11504297, 41661021, 41661085), the Innovative Research Team Foundation of Guangxi, China (Grant No. 2016JJF15001), the Natural Science Foundation of Guangxi, China (Grant No. 2016GXNSFAA380241), Shaanxi Science and Technology (Grant No. 2016KTZDGY05-02), Basic Ability Promotion Project of Guangxi Middle and Young Teachers in University, China (Grant No. 2017KY0403), Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, China (Guangxi Teachers Education University), the Ph. D. Initial Fund of the Guangxi Teachers Education University, China.Received Date:07 December 2017
Accepted Date:07 April 2018
Published Online:20 May 2018
Abstract:Conventional Muller matrix imaging polarimeter (MMIP) with several rotating elements suffers mechanical complexity, vibration noise, heat generation, and other unwanted problems. To overcome those shortcomings, we present a snapshot Muller matrix imaging polarimeter (SMMIP) using a birefringent crystal with high extinction ratio. The snapshot imaging polarimeter allows a single image to be used to measure the polarization of a scene without electronic control units or moving mechanical components. This new polarimeter combines the technique of Muller matrix spectropolarimetry with a snapshot imaging polarimeter through using modified Savart polariscope (MSP-SMMIP). It contains both a generator and an analyzer module. Spatial polarization fringes are localized on a sample by incorporating modified Savart polariscope into a polarization generator module. These fringes modulate the Mueller matrix components of the sample, which are subsequently isolated with modified Savart polariscope in an analyzer module, and the analyzer and the imaging lens combine with 16 beams to create interference, resulting in spatial modulation on the two-dimensional CCD camera. Expressions for interference intensities, optical system analysis, theory of calibration and method of reconstruction are presented. Finally, the numerical simulation is used to demonstrate theoretical analysis and the feasibility of MSP-SMMIP. The layout is very easy to calibrate and the reference target is only a linear polarizer at 22.5°. Moreover, the remarkable advantages of the proposed instrument, compared with conventional Muller matrix imaging polarimeter, are that it is also simple, compact, snapshotted, and static (no moving parts). Therefore we believe that the proposed snapshot imaging polarimeter will be very useful in many applications, such as biomedical imaging and remote sensing.
Keywords: birefringent crystal/
Mueller matrix/
snapshot imaging polarimeter/
optical system analysis
