Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays

Liang Wu; Xiangru Wang; Caidong Xiong; Ziqiang Huang; Rusheng Zhuo; Jiarui Rao; Qinggui Tan

doi:doi:10.3788/COL201715.101601

Chinese Optics Letters, 2017, 15 (10): 101601, Published Online: Jul. 19, 2018

Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays Download： 1199次

Liang Wu ^1,2Xiangru Wang ^2,*Caidong Xiong ¹Ziqiang Huang ³Rusheng Zhuo ²Jiarui Rao ²Qinggui Tan ⁴

Author Affiliations

¹ School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, 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

Figures & Tables

Fig. 1. (Color online) Schematic diagram of the polarization-independent 2D beam steering setup, where the 1D LC-OPAs are used.

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Fig. 2. (Color online) (a) Experimental setup of the polarization-independent 2D beam steering. (b) Measured phase retardation versus driving voltage.

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Fig. 3. (Color online) Measured output steering angles in $x$ (azimuth) and $y$ (elevation) direction versus different polarization angles of the linearly polarized beam. Inserted figures are the captured beam patterns of several polarization states under the steering angle of $(θ_{x}, θ_{y}) = (1000, 1000) μ rad$ .

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Fig. 4. Beam patterns of output beams and corresponding polarization components at three different polarization angles. Polarization angles of the linearly polarized incident beam are: (a) 0°, (b) 45°, and (c) 90°. The steering angle is (700, 800) μrad.

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Table1. Diffraction Efficiency of the LC-OPA

	3.050°	1.524°	0.762°	0.381°	0.190°
Before optimization	20.6%	38.2%	47.7%	50.2%	56.4%
After optimization	65.2%	72.0%	78.6%	81.8%	84.7%

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Liang Wu, Xiangru Wang, Caidong Xiong, Ziqiang Huang, Rusheng Zhuo, Jiarui Rao, Qinggui Tan. Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays[J]. Chinese Optics Letters, 2017, 15(10): 101601.

Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays Download： 1199次

Fig. 1. (Color online) Schematic diagram of the polarization-independent 2D beam steering setup, where the 1D LC-OPAs are used.

Fig. 2. (Color online) (a) Experimental setup of the polarization-independent 2D beam steering. (b) Measured phase retardation versus driving voltage.

Fig. 4. Beam patterns of output beams and corresponding polarization components at three different polarization angles. Polarization angles of the linearly polarized incident beam are: (a) 0°, (b) 45°, and (c) 90°. The steering angle is (700, 800) μrad.

Table1. Diffraction Efficiency of the LC-OPA

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Polarization-independent two-dimensional beam steering using liquid crystal optical phased arrays Download： 1199次

Fig. 1. (Color online) Schematic diagram of the polarization-independent 2D beam steering setup, where the 1D LC-OPAs are used.

Fig. 2. (Color online) (a) Experimental setup of the polarization-independent 2D beam steering. (b) Measured phase retardation versus driving voltage.

Fig. 4. Beam patterns of output beams and corresponding polarization components at three different polarization angles. Polarization angles of the linearly polarized incident beam are: (a) 0°, (b) 45°, and (c) 90°. The steering angle is (700, 800) μrad.

Table1. Diffraction Efficiency of the LC-OPA

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