基于液晶光学相控阵的非机械式光束扫描技术研究  

Research on Non-Mechanical Beam Scanning Technology Based on Liquid Crystal Optical Phased Array

作　　者：董亭亭[1] 姚莉 孙钢波[1] 王密信[1] 王晨晟[1] 耿安兵[1] 姚远[1] DONG Ting-ting;YAO Li;SUN Gang-bo;WANG Mi-xin;WANG Chen-sheng;GENG An-bing;YAO Yuan(Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China;ShanghaiAerospace Control Technology Institute,Shanghai 201109,China)

机构地区：[1]华中光电技术研究所-武汉光电国家研究中心,湖北武汉430223 [2]上海航天控制技术研究所,上海201109

出　　处：《光学与光电技术》2021年第1期16-22,共7页Optics & Optoelectronic Technology

摘　　要：基于衍射光栅原理,以反射式液晶光学相控阵为研究对象,针对波长1550 nm波段进行光束扫描角度计算。并对周期性和非周期性的扫描模式进行了仿真分析。编制了周期性和非周期性扫描模式的相位图程序及实验软件。实现了对光波的光学相位进行实时可编程控制。通过光束偏转实验,验证了最大偏转角度2.4°时,最大探测距离约为1.3 km。该实验结果对制导、多目标威胁预警和反击中有着指导意义。Based on the principle of diffraction gratings,the beam scanning angle is calculated for the wavelength of 1550 nm with the reflective liquid crystal optical phased array(LCOPA)as the research object.And the periodic and nonperiodic scanning modes are simulated and analyzed.The phase diagram program and test software of periodic and nonperiodic scanning modes are compiled.LCOPA is based on the theory of pure-phase modulation,which can achieve the realtime and programmable control for optical phase.The results show that the maximum detection distance is about 1.3 km when the defection angle is 2.4°.The test scanning system is of value in the fields of multi-object tracing,laser guiding and multi-object defense.

关 键 词：液晶光学相控阵 非机械式光束偏转 激光应用 相位调制 

分 类 号：TN249[电子电信—物理电子学]