Hu Pengcheng, Wang Yue, Fu Haijin, Zhu Jinghao, Tan Jiubin
Opt Express. 2017 Feb 20;25(4):3605-3612. doi: 10.1364/OE.25.003605.
This paper reports a hitherto undiscovered cyclic error whose origin is different from that of conventional errors in homodyne interferometers. To explain this error, a model based on ghost reflections and the interference principle is developed. In general, in homodyne interferometers, multi-order Doppler frequency shift ghost beams participate in the final interference and generate multi-order cyclic errors. This "new" cyclic error is compared with conventional errors by means of Lissajous curves. And we establish a setup to validate our proposed model. We use a corner cube retroreflector to replace the mirror and we find the error is significantly reduced. We believe that our findings can contribute to the further development of highly accurate homodyne interferometers.
本文报道了一种迄今未被发现的周期性误差，其起源与零差干涉仪中的传统误差不同。为了解释这种误差，基于重影反射和干涉原理建立了一个模型。一般来说，在零差干涉仪中，多阶多普勒频移鬼光束参与最终干涉并产生多阶周期性误差。通过李萨如图形将这种“新的”周期性误差与传统误差进行了比较。并且我们建立了一个装置来验证我们提出的模型。我们使用角锥棱镜取代平面镜，发现误差显著降低。我们相信我们的发现有助于高精度零差干涉仪的进一步发展。
