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Proceedings Paper

2-D beam deflection model of liquid crystal phased array
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Paper Abstract

ATP(Acquisition, pointing and tracking)technology is one of the key technologies and an important guarantee for establishing reliable links in the field of space laser communication. Liquid crystal phased array( LCOPA)is generally used as the core phase shifter for laser beam precise deflection. The classical precise deflection control method can only realize sparse and uneven concentric circle distribution in the deflection range, and the diffraction efficiency decreases seriously with the increase of deflection angles. Therefore, we propose a liquid crystal beam control method based on planar phased array radar model. The beam direction is controlled by changing phase difference between the electrodes. This method can realize two dimensional continuous beam deflection and uniform distribution. The deflection precision are analyzed and the theoretical simulation and experimental analysis are carried out. The results show that the precision is less than 14 μrad of x direction and 12 μrad of y direction within the range of 2.1 mrad beam deflection. Finally, the effect of rotation angle on two-dimensional deflection precision is analyzed.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11334, AOPC 2019: Optoelectronic Devices and Integration; and Terahertz Technology and Applications, 1133408 (18 December 2019); doi: 10.1117/12.2539591
Show Author Affiliations
Jie Hu, Key Lab. of Optical Engineering (China)
Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Shengping Du, Key Lab. of Optical Engineering (China)
Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Hongyang Guo, Key Lab. of Opitcal Engineering (China)
Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Xi Ren, Key Lab. of Optical Engineering (China)
Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11334:
AOPC 2019: Optoelectronic Devices and Integration; and Terahertz Technology and Applications
Zhiping Zhou; Xiao-Cong Yuan; Daoxin Dai, Editor(s)

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