【作者】 黄子强； 张翠玉； 陈晓西； 杨文君；

【Author】 HUANG Zi-qiang, ZHANG Cui-yu, CHEN Xiao-xi, YANG Wen-jun (Optoelectronic Information School, University of Electronic Science and Technology of China, Chengdu 610054, China)

【机构】 电子科技大学光电信息学院；

【摘要】 提出了基于液晶二元光栅的用于激光方位探测与跟瞄系统的构架和计算模型,并提出使调制以后的激光束始终指向受控对象,并向系统报告受控对象方位的技术方案。通过采用电控液晶二元光栅的对入射激光辐射偏转,使之聚焦于二象限探测器中心的方法可以获得激光源的方位,而探测器上的信号可被用于分析入射激光辐射的调制频率、码型等信息。由于液晶二元光栅的光程分布可以被任意写入,人们可以很快验证衍射光学元件的设计,而液晶二元光栅的可控特性可以实现常规衍射光学元件不可能实现的功能,从而在激光束方位的探测和跟瞄、大气湍流的校正等各个方面都有潜在的应用。更多还原

【Abstract】 Base on liquid crystal binary grating, we proposed the systemic structure and computation module for laser azimuth detection. The system reports azimuth of the laser source. Electric controlled liquid crystal binary grating deflects incidence laser emission till it is focused to the center of binary quadrant detector, and then the azimuth information will be acquired, while the signal in the detector can be used in analyzing modulating frequency, code pattern information of incidence laser emission. Due to the fact that optical path distribution of liquid crystal binary grating could be written, design of diffraction optical element would be verified. The controllable characteristics of liquid crystal binary grating would make azimuth detection, adjustment of atmospheric turbulence being realized.更多还原