Johnston L H
Appl Opt. 1977 Apr 1;16(4):1082-4. doi: 10.1364/AO.16.001082.
A three-mirror system is described which is capable of rotating the polarization angle of a beam through any angle from 0 degrees to 360 degrees , with the output beam line coaxial with the input beam. Calculations are made of metallic reflective phase shifts, from the midvisible through ir, showing that this rotator would introduce negligible elliptical polarization for wavelengths longer than about 5 microm.
描述了一种三镜系统，该系统能够将光束的偏振角旋转0度至360度之间的任意角度，且输出光束线与输入光束同轴。对从可见光中部到红外波段的金属反射相移进行了计算，结果表明，对于波长大于约5微米的光，该旋转器引入的椭圆偏振可忽略不计。
