An optical screw with a pitch of one wavelength
An optical screw with a pitch of one wavelength
复制标题
螺距为一个波长的光学螺钉
DOI：
--
复制
发表时间：
1973
期刊：
影响因子：
--
通讯作者：
J. James
中科院分区：
文献类型：
--
作者：
Y. Elsworth;J. James
本文描述了一种用偏振激光控制迈克尔逊干涉仪光程差的方法。设计了偏振面随干涉仪中光程差线性变化的角度旋转的方法。这个角度可以与偏振片分析器的轴进行比较，并且可以产生与角度差成比例的信号，放大并施加到移动的迈克尔逊镜作为恢复力。偏振片检偏器通过外部机构的旋转然后产生移动镜支架的相应移动。
A method is described for controlling the path difference in a Michelson interferometer using a polarized laser beam. It is contrived that the plane of polarization will rotate with the angle depending linearly on the path difference in the interferometer. This angle can be compared with the axis of a polaroid analyser and a signal proportional to the angular difference can be produced, amplified and applied to the moving Michelson mirror as a restoring force. Rotation of the polaroid analyser by an external agency then produces a corresponding movement of the moving mirror carriage.