液晶相位可变延迟器在极化电子碰撞实验中的应用  

Application of liquid crystal variable retarders in spin-polarized electron collision experiments

作　　者：任少辣[1] 董占民[1] 庞文宁[1] 

机构地区：[1]清华大学物理系极化物理实验室,北京100084

出　　处：《物理》2008年第11期793-796,共4页Physics

基　　金：国家自然科学基金(批准号:10134010;10574079)资助项目

摘　　要：液晶相位可变延迟器(liquid crystal variable retarders,LCVR)的快慢轴之间的相位差随两端所加的电压连续可调,通过调节电压可以实现对入射光偏振度、偏振方向的操控.文中第2,3部分介绍了LVCR在特定波长不同延迟相位的标定方法及标定结果,第4,5部分介绍了利用LVCR测量Stokes参数的原理及方法.The phase difference between the fast and slow axes of a liquid crystal variable retarders （LCVR） can be changed continuously by modulating an AC voltage applied on the bi-surface of the LCVR. The polarization of an input light beam can thus be controlled by varying the voltage. The calibration method and results of determining the different phase retardances for given wavelengths are described. The theory and method for measuring the integral Stokes parameters by LCVR are also discussed.

关 键 词：液晶相位可变延迟器(LCVR) 相位延迟 Stokes参数 极化 

分 类 号：O562.5[理学—原子与分子物理]