22 October 2010 A new system for measuring the diffraction efficiency of large aperture gratings
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Abstract
A simple and new system for measuring the diffraction efficiency of large aperture gratings at littrow angle is established in this paper. The reference grating Po, double beams and timer with shutter have been draw into the system for eliminating the impact of polarization and stray light, fluctuation of incident light, and the fatigue of photodetector. A program is designed to scan, measure and calculate the diffraction efficiency of the gratings automatically. The diffraction efficiency accuracy measured for the gratings is increased by ~1% with this system. To achieve more measured accuracy, additional beam of reflection light should be imported.
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Xiaowei Zhou, Xiaowei Zhou, Xiao Wang, Xiao Wang, Zhengkun Liu, Zhengkun Liu, Xiangdong Xu, Xiangdong Xu, Shaojun Fu, Shaojun Fu, } "A new system for measuring the diffraction efficiency of large aperture gratings", Proc. SPIE 7657, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 76571E (22 October 2010); doi: 10.1117/12.866282; https://doi.org/10.1117/12.866282
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