DC-offset-free homodyne interferometer and its nonlinearity compensation

被引：34
|
作者：
Hu, Pengcheng [1 ]
Zhu, Jinghao [1 ]
Zhai, Xiaoyu [1 ]
Tan, JiuBin [1 ]
机构：
[1] Harbin Inst Technol, Harbin 150080, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 07期
基金：
中国国家自然科学基金;
关键词：
LASER INTERFEROMETER; ERROR;
D O I：
10.1364/OE.23.008399
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2015 Optical Society of America
引用
收藏
页码：8399 / 8408
页数：10
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