基于单偏振器的液晶相位延迟器光电特性  

Photoelectric characterization of liquid crystal variable retarder using single polarizer

作　　者：霍树春[1] 胡春光[1] 沈万福 李艳宁[1] 胡小唐[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《红外与毫米波学报》2016年第1期68-71,77,共5页Journal of Infrared and Millimeter Waves

基　　金：全国优秀博士学位论文作者专项基金(201140);国家自然科学基金(61008028);教育部留学回国人员科研启动基金~~

摘　　要：液晶相位延迟器(LCVR)是一种新型偏振器件,精确标定其光电特性是实现基于该器件的精密光学偏振测量的关键环节.通过建立探测光强与相位延迟值和器件方位角的数学模型,提出了一种基于单偏振器的测量新方法,可快速计算出不同电压作用下的LCVR本征轴方位角和相位延迟值.该方法具有测试结构简单、相位延迟测量过程无需机械旋转、全谱测量速度快的优点.此外,该测量结构便于集成在其它偏振测量结构中,实现LCVR的在线、实时标定.实验结果表明基于上述方法的测试系统,LCVR的相位延迟测量重复性优于5‰,本征轴方位角的测量分辨率优于0.1°.Liquid crystal phase retarder（ LCVR） is a newpolarization state control device. Correct calibration of its photoelectric characteristics significantly effects the precise optical polarization measurements based on this device. A newtesting method including only one polarizer was proposed by modeling light intensity,phase retardation and eigen-axis azimuth. Without rotating any component,multiwavelength retardations can be rapidly acquired using this simply structured method. In addition,this newsetup can be integrated into other polarization measuring instruments for on-line calibration of LCVR. Experimental results showthat the repeatability of measured retardations is better than 5‰,while the resolution of eigen-axis azimuth is better than 0. 1°.

关 键 词：液晶延迟器 相位测量 本征轴方位角 偏振光学 

分 类 号：O433.1[机械工程—光学工程]