Enhanced laser self-mixing Doppler velocity measurement with pre-feedback mirror

被引：6
|
作者：
Geng, Yuhan [1 ]
Jiang, Chunlei [1 ]
Kan, Lingling [1 ]
机构：
[1] Northeast Petr Univ, Coll Elect & Informat Engn, Daqing 163318, Peoples R China
来源：
APPLIED OPTICS | 2019年 / 58卷 / 27期
关键词：
INTERFEROMETRY; INTERFERENCE; SPECKLE;
D O I：
10.1364/AO.58.007571
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
On the basis of conventional measurement, a novel enhanced laser self-mixing Doppler velocimetry is proposed in this paper, with a pre-feedback structure added to enhance the signals. The improved velocimetry is applicable to the measure of the velocity when the feedback light is weak. Through the exploration of the theoretical model and the performance of experiments, the study results show that the proposed method has a significant signal enhancement effect, with experimental measurement relative errors being less than 0.9%. (C) 2019 Optical Society of America
引用
收藏
页码：7571 / 7576
页数：6
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