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Chin. Opt. Lett.
 Home  List of Issues    Issue 10 , Vol. 15 , 2017    10.3788/COL201715.101601

Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays
Liang Wu1;2, Xiangru Wang2, Caidong Xiong1, Ziqiang Huang3, Rusheng Zhuo2, Jiarui Rao2, and Qinggui Tan4
1 School of Physical Electronics, [University of Electronic Science and Technology of China], Chengdu 61 0054, China
2 School of Optoelectronic Information, [University of Electronic Science and Technology of China], Chengdu 610054, China
3 Research Institute of Electronic Science and Technology, [University of Electronic Science and Technology of China], Chengdu 610054, China
4 [National Key Laboratory of Science and Technology on Space Microwave], Xi’an 710100, China

Chin. Opt. Lett., 2017, 15(10): pp.101601

Keywords(OCIS Code): 160.3710  120.4820  230.3720  230.6120  

A polarization-independent nonmechanical laser beam steering scheme is proposed to realize continuous two-dimensional (2D) scanning with high efficiency, where the core components are two polarization-dependent devices, which are called liquid crystal optical phased arrays (LC-OPAs). These two one-dimensional (1D) devices are orthogonally cascaded to work on the state of azimuthal and elevation steering, respectively. Properties of polarization independence as well as 2D beam steering are mathematically and experimentally verified with a good agreement. Based on the experimental setup, linearly polarized beams with different polarization angles are steered with high accuracy. The measured angular deviations are less than 5 μrad, which is on the same order of the accuracy of the measurement system. This polarization-independent 2D laser beam steering scheme has potential application for nonmechanical laser communication, lidar, and other LC-based systems.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2017/8/9

Get Citation: Liang Wu, Xiangru Wang, Caidong Xiong, Ziqiang Huang, Rusheng Zhuo, Jiarui Rao, and Qinggui Tan, "Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays," Chin. Opt. Lett. 15(10), 101601(2017)

Note: This work was supported by the National Science Foundation of China (NSFC) (Nos. 61405029, 91438108, and 61231012) and the Shanghai Aerospace Science and Technology (SAST) (No. 2015087).


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