Self-mixing laser Doppler velocimeter based on dual frequency lasers

被引：1
|
作者：
Liu, G [1 ]
Zhang, SL [1 ]
机构：
[1] Tsinghua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
来源：
ADVANCED MATERIALS AND DEVICES FOR SENSING AND IMAGING II | 2005年 / 5633卷
关键词：
optical feedback; self-mixing; polarized modes; dual-frequency laser; velocimeter;
D O I：
10.1117/12.571180
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A self-mixing laser Doppler velocimeter is designed based on dual frequency laser. We can receive two beat signals and analyze them in frequency domain. The value of Doppler frequency shift is half of the distance between the two components in the power spectrum while the sign of Doppler frequency shift can be easily determined by the relative position of the two components in the power spectrum.
引用
收藏
页码：363 / 370
页数：8
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