Optical Design and Engineering

Design of stray light suppressed digital micromirror device-based spectrometer with compound parabolic concentrator

[+] Author Affiliations
Xiangqian Quan, Xiaoduo Wang, Xinrong Hu

Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun 130033, China

University of Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Beijing 100049, China

Hua Liu, Zhenwu Lu, Xiangquan Tan

Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun 130033, China

Yongqian Quan

CRRC Corporation Limited, Zhuzhou Times Material Technology, Co. Ltd., Zhuzhou 412007, China

Hetuo Chen

University of Electronic Science and Technology of China, School of Microelectronics and Solid-state Electronics, Chengdu 610054, China

Heyang Bu

University of Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Beijing 100049, China

Opt. Eng. 54(11), 115101 (Nov 02, 2015). doi:10.1117/1.OE.54.11.115101
History: Received June 21, 2015; Accepted September 14, 2015
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Abstract.  To suppress the stray light caused by the diffraction and scattered light of a digital micromirror device (DMD) in a DMD-based spectrometer, a new concentrator system with a compound parabolic concentrator (CPC) is presented, which has the advantage that all stray light beyond the acceptance angle can be rejected with the most compact device available. The diffraction of DMD is explored to determine the acceptance angle, and the parameters of the concentrator system are analyzed to determine the geometric concentration ratio. The simulation results show that the spectrum concentration efficiency of the CPC is 98.7%, that the stray light concentration efficiency from the DMD is 36.3%, and that the stray light concentration efficiency beyond the acceptance angle is 0.00%. Finally, according to the discussion about tolerance on the CPC, a conclusion can be drawn that the new DMD-based spectrometer with CPC is feasible and significant in suppressing the stray light.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Xiangqian Quan ; Hua Liu ; Zhenwu Lu ; Yongqian Quan ; Xiaoduo Wang, et al.
"Design of stray light suppressed digital micromirror device-based spectrometer with compound parabolic concentrator", Opt. Eng. 54(11), 115101 (Nov 02, 2015). ; http://dx.doi.org/10.1117/1.OE.54.11.115101


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