Hu Pengcheng, Zhu Jinghao, Zhai Xiaoyu, Tan JiuBin
Opt Express. 2015 Apr 6;23(7):8399-408. doi: 10.1364/OE.23.008399.
This study presents an analysis of the cyclic nonlinearity in the homodyne interferometer starting from the interference principle. We present the design for an enhanced homodyne interferometer without DC offset, for which the nonlinearity model will not be influenced by the intensity of the measurement beam. Our experimental results show that the enhanced interferometer can suppress the nonlinearity to less than 0.5 nm with a system calibration involving gain adjustment and phase-correction methods.
本研究从干涉原理出发，对零差干涉仪中的周期性非线性进行了分析。我们提出了一种无直流偏移的增强型零差干涉仪的设计方案，其非线性模型不受测量光束强度的影响。我们的实验结果表明，通过涉及增益调整和相位校正方法的系统校准，增强型干涉仪能够将非线性抑制到小于0.5纳米。
