Flat-top beams spatial shaping with digital micromirror device

LOU Yanyang; ZHENG Xianliang; ZHANG Shichao; LU Weimin; LI Hui; XIONG Daxi

doi:10.7510/jgjs.issn.1001-3806.2016.06.029

In order to satisfy the applications with high quality beams and fast scanning, the formation of single flat-top and multiple flat-top beams were simulated by digital micromirror device and error diffusion method. An experimental setup with 680nm laser was built to validate the model. The beam shaping result was evaluated by using beam fill factor, light field modulation factor, root mean square error as parameters, and the energy utilization rate of beam shaping based on digital micromirror array was measured and analyzed. The results show that beam fill factors increase from 36.1% to 62.3%(single),56.7%(multiple) respectively, while light field modulation factors decrease from 73.3% to 25.6%(single),30.3%(multiple) respectively. Spatial shaping results show that the multiple flat-top beams are valuable in high quality beams and fast scanning.

Flat-top beams spatial shaping with digital micromirror device

Corresponding author: XIONG Daxi, xiongdx@sibet.ac.cn

1. Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China;

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

3. University of Chinese Academy of Sciences, Beijing 100039, China

Received Date: 2015-09-14

Accepted Date: 2015-11-11

Available Online: 2016-11-25

Abstract: In order to satisfy the applications with high quality beams and fast scanning, the formation of single flat-top and multiple flat-top beams were simulated by digital micromirror device and error diffusion method. An experimental setup with 680nm laser was built to validate the model. The beam shaping result was evaluated by using beam fill factor, light field modulation factor, root mean square error as parameters, and the energy utilization rate of beam shaping based on digital micromirror array was measured and analyzed. The results show that beam fill factors increase from 36.1% to 62.3%(single),56.7%(multiple) respectively, while light field modulation factors decrease from 73.3% to 25.6%(single),30.3%(multiple) respectively. Spatial shaping results show that the multiple flat-top beams are valuable in high quality beams and fast scanning.

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Reference (15)

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Flat-top beams spatial shaping with digital micromirror device

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