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Received: Mar. 26, 2020
Accepted: --
Posted: Jul. 1, 2020
Published Online: Aug. 25, 2020
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Jin CHENG, Shun ZHOU, Xue-ping SUN, Xin-xin PU, Qi-liang SUN, Ying-shun XU, Wei-guo LIU. Laser Speckle Suppression Based on Tunable Metasurface[J]. Acta Photonica Sinica, 2020, 49(7): 724001
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Optics at Surfaces
Acta Photonica Sinica, Vol. 49, Issue 7, 724001 (2020)
Laser Speckle Suppression Based on Tunable Metasurface
CHENG Jin1, ZHOU Shun1, SUN Xue-ping1, PU Xin-xin1, SUN Qi-liang2, XU Ying-shun3, and LIU Wei-guo1
Author Affiliations
- 1School of Photoelectric Engineering, Xi''an Technological University, Xi''an 710021, China
- 2Wuxi V-Sensor Technology Co., Ltd, Wuxi, Jiangsu 214101, China
- 3School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300072, China
Abstract
In order to suppress laser speckle, a metasurface structure with high transmittance and random phase function is designed, which utilizing the basic idea of time-averaged suppression speckle theory. Then integrated with MEMS technology, the design and manufacture of micro-rotation stages is realized, and to achieve a ultra-small speckle suppression device. The experimental results show that the laser speckle contrast can be reduced to 2.63%, which meets the needs of laser projection. This novel laser speckle suppression device is simple in use, high in energy utilization rate, low in cost, and easy to mass-produce.
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