激光与光电子学进展, 2019, 56 (11): 110002, 网络出版: 2019-06-13
基于液晶光学相控阵的光束扫描研究进展 
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Research Progress on Beam Scanning Based on Liquid Crystal Optical Phased Array
图 & 表
图 1. N个阵元相控阵示意图。(a)相控阵模型;(b)模拟闪耀光栅
Fig. 1. Schematic of N-unit phase array. (a) Phased array model; (b) simulated blazed grating
图 2. LCOPA基本结构图。(a)不加电压;(b)施加电压
Fig. 2. Basic structure of LCOPA. (a) Without voltage applied; (b) with voltage applied
图 3. 不同液晶相控模型。(a)雷声公司研制的液晶相控阵[1];(b)子孔径相干法(SAC)实现高精度扫描[19]
Fig. 3. Different liquid crystal phase control models. (a) LCOPA by Raytheon[1]; (b) high-precision scanning with SAC[19]
图 4. 在有无Spiking算法下的上升时间和下降时间(Δ?为变化相位)[54]
Fig. 4. Rising time and falling time with and without Spiking algorithm (Δ? is phase change)[54]
图 5. 0~2π相位段响应曲线[48]。(a)上升过程;(b)下降过程
Fig. 5. Time response curves for 0-2π phase. (a) Rising process; (b) falling process
图 6. 基于相控阵模型的光束扫描[50]。(a)电极相位差与偏转角度的关系;(b)偏转角度与衍射效率的关系
Fig. 6. Beam scanning based on phased array model[50]. (a) Phase difference of electrode versus steering angle; (b) steering angle versus diffraction efficiency
图 7. 利用4种优化方法提高衍射效率[57]
Fig. 7. Diffraction efficiency improvement by four optimization approaches[57]
图 10. 电子科技大学自主研制LCOPA和相关实验结果[20]。(a) LCOPA;(b)光束偏转实验结果
Fig. 10. Self-made LCOPA and experimental result by University of Electronic Science and Technology of China[20]. (a) LCOPA; (b) experimental result of beam steering
胡婕, 杜升平, 郭弘扬. 基于液晶光学相控阵的光束扫描研究进展[J]. 激光与光电子学进展, 2019, 56(11): 110002. Jie Hu, Shengping Du, Hongyang Guo. Research Progress on Beam Scanning Based on Liquid Crystal Optical Phased Array[J]. Laser & Optoelectronics Progress, 2019, 56(11): 110002.
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