液晶相控阵技术的研究进展

Research progress in liquid crystal phased array technology

液晶相控阵是一种基于液晶的电控可编程光学相控器件,具有体积小、质量轻、功耗低和易于控制等优点。通过对入射光束相位的调制来精确控制波束转向,不仅实现了器件的空间快速灵活扫描,能够对运动中的目标进行自动跟踪、捕获和瞄准,而且使系统集成度更高,降低了制造成本,可广泛应用于激光雷达和空间光通信等领域。总结了国内外对液晶相控阵技术的研究进展,主要包括波束控制、系统分析建模和系统性能优化。同时也介绍了液晶相控阵在高能激光、空间光通信和激光雷达中的应用研究进展。

Liquid crystal phased array is a kind of electronically controlled programmable optical phased array device based on liquid crystal,which has the advantages of small size,light weight,low power consumption and easy control.The device can precisely control the beam steering by modulating the phase of the incident beam,which not only realizes the performance of fast and flexible the spatial scanning for automatically acquisition,tracking and aiming at the moving targets,but also improves the system integration,and reduces the manufacturing cost.Liquid crystal phased array can be widely used in the fields of radar and space optical communication and other fields.This paper summarizes the research progress and key technologies of liquid crystal phased array at home and abroad,mainly including beam control,system analysis and modeling,and system performance optimization.The application and research progress of liquid crystal phased array in high-energy laser,space optical communication and Lidar are also introduced.