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《Acta Optica Sinica》 2017-08
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Effect of Optical Axis Orientation and Thickness of Crystal on Performance of Double Wedge Depolarizer

Jin Yangming;Shen Weimin;Key Lab of Modern Optical Technologies of Education Ministry of China,College of Physics,Optoelectronics and Energy,Soochow University;Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province,College of Physics,Optoelectronics and Energy,Soochow University;  
Based on the working principle of depolarizer,the general relationship between the structural parameters of depolarizer and the polarization sensitivity of optical system is established by applying Mueller matrix and Stokes vector.With numerical analysis,it is pointed out that the depolarizer has excellent depolarization performance when the angle between the optical axes of two wedge crystals is 90°.Under this orientation,selecting proper crystal thickness can further reduce the polarization sensitivity of optical system.Finally,taking grating imaging spectrometer as an example,we design a depolarizer and evaluate its performance.
【Fund】: 国家重点研发计划(2016YFB0500501);; 江苏高校优势学科建设工程资助项目(PAPD)
【CateGory Index】: O436.3
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