Design of double wedge depolarizer for grating imaging spectrometer

Yangming Jin; Weimin Shen

doi:10.1117/12.2267685

8 March 2017 Design of double wedge depolarizer for grating imaging spectrometer

Yangming Jin, Weimin Shen

Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 1025522 (2017) https://doi.org/10.1117/12.2267685
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China

Abstract

In this paper, we study a compact double wedge depolarizer for grating imaging spectrometers. Based on introduction of its working principle, the general relationship between polarization sensitivity of an optical system and the structural parameters of depolarizer is established by means of Muller matrix and Stokes vector. Through numerical analysis it is pointed out that the depolarizer has the best depolarization performance with appropriate crystal thickness when the angle of the first wedge crystal optical axis is 45° respect to grating groove orientation and the two optical axis of the crystal is mutually orthogonal. Finally, an example, a depolarizer for grating imaging spectrometers is designed and its performance is evaluated.

Citation Download Citation

Yangming Jin and Weimin Shen "Design of double wedge depolarizer for grating imaging spectrometer", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 1025522 (8 March 2017); https://doi.org/10.1117/12.2267685

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