基于液晶空间光调制器的光束偏转控制技术  

Beam Deflection Control Technology Based on Liquid Crystal Spatial Light Modulator

作　　者：杨赫 佟首峰[1] 张磊[1] 常帅[1] 宋延嵩[1] 赵馨[1] 范新坤[1] 

机构地区：[1]长春理工大学空地激光通信技术国防重点学科实验室,吉林长春130022

出　　处：《激光与光电子学进展》2017年第11期78-85,共8页Laser & Optoelectronics Progress

摘　　要：为实现基于液晶空间光调制器的非机械式光束智能控制,利用像素个数为1920×1080的硅基液晶空间光调制器搭建了一个实验系统。该系统能在空间内实现大角度、高衍射效率、连续指向的单光束,同时还可将入射光分成2、3、4、5束并单独控制每个分光束的偏转角度。介绍了空间光调制器的相位调制原理、理论模型,验证了光束偏转控制及分光束功能,分析测试系统的光路及原理,最后对实验结果进行总结并提出建议与展望。In order to realize non-mechanical beam intelligent control based on liquid crystal spatial light modulator, a test system is built with silicon-based liquid crystal spatial light modulator whose pixel number is 1920 ~ 1080. The system can obtain the single beam with large angle, high diffraction efficiency, continuous steering in space, divide the incident light beam into 2, 3, 4, 5 beams and control deflection angle of each beam separately. Phase modulation principl＇e and＇ theoretical model of the spatial light modulator are introduced. The beam deflection control function and the h：eam spiittifig function are verified. The light path and the principle of the test system are analyzed. Finally, we..sum up the test results and put forward the suggestion and prospect.

关 键 词：光通信 光束偏转控制技术 液晶空间光调制器 多光束控制 

分 类 号：TN929.1[电子电信—通信与信息系统]