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Proceedings Paper

Continuously one-dimensional steering of coherently combined beam utilizing phased array of liquid crystal optical phased arrays (PALCOPA)
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Paper Abstract

We present an effective method to realize continuously one-dimensional steering of coherently combined beam in the field-of-view of PALCOPA. To achieve this purpose, besides the linear phase profiles to steer the incident lasers, extra phase modulations should be applied to them. These phase offsets depend on both the assigned deflection angle of combined beam and the parameters of beam combining system. Using the Fraunhofer propagation principle, we derive the analytical expressions of the far-field intensity distribution of the combined beam. The analytical functions demonstrate the validity of the proposed method. Finally, we evaluate the proposed technique through computer simulations and experiments, by considering three main indicators of the combined beam, i.e. deflection accuracy, mainlobe width and combining gain.

Paper Details

Date Published: 4 March 2015
PDF: 7 pages
Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 934426 (4 March 2015); doi: 10.1117/12.2078189
Show Author Affiliations
Jian Chen, Univ. of Electronic Science and Technology of China (China)
Lingjiang Kong, Univ. of Electronic Science and Technology of China (China)
Feng Xiao, Univ. of Electronic Science and Technology of China (China)
Zhenming Yang, Univ. of Electronic Science and Technology of China (China)
Xiangru Wang, Univ of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9344:
Fiber Lasers XII: Technology, Systems, and Applications
L. Brandon Shaw, Editor(s)

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