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Proceedings Paper

The spatial light modulator for controlling beam deflection
Author(s): Xu Zang; Wengang Hu; Dongsheng Wu
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Paper Abstract

In this paper, according to the principle of non-mechanical structure, the liquid crystal spatial light modulator is used as the modulation device, and a new way to realize the deflection control of the beam is proposed. The theoretical model of beam deflection control is established. The relationship between the radius of the first ring of the Fresnel lens and its corresponding focal length is analyzed. The range and accuracy of the beam deflection angle are analyzed under different center radii. The relationship between the deflection angle of the beam with the same displacement distance at different center radii is analyzed. The relationship between the beam deflection and the fresnel phase diagram size and displacement factor is obtained. Within a certain range, the smaller the radius of the first ring of loaded fresnel phase map, the greater the deflection angle. According to the experiment expected to reduce the phase map radius, with the follow-up optical path should be able to improve the scope of beam scanning.

Paper Details

Date Published: 25 October 2017
PDF: 7 pages
Proc. SPIE 10460, AOPC 2017: Optoelectronics and Micro/Nano-Optics, 104600Q (25 October 2017); doi: 10.1117/12.2283536
Show Author Affiliations
Xu Zang, Shijiazhuang Mechanical Engineering College (China)
Wengang Hu, Shijiazhuang Mechanical Engineering College (China)
Dongsheng Wu, Shijiazhuang Mechanical Engineering College (China)

Published in SPIE Proceedings Vol. 10460:
AOPC 2017: Optoelectronics and Micro/Nano-Optics
Min Qiu; Min Gu; Xiaocong Yuan; Zhiping Zhou, Editor(s)

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