Multiple self-mixing interferometry based on lock-in amplifier analysis for vibration measurement

被引：6
|
作者：
Zhang, Zihua [1 ]
Wang, Fuli [2 ]
Yuan, Tao [3 ]
Li, Chengwei [1 ]
机构：
[1] Harbin Inst Technol, Sch Instrumentat Sci & Engn, Harbin 150001, Peoples R China
[2] PLAA Infantry Coll, Shijiazhuang 050083, Hebei, Peoples R China
[3] Daqing Oilfield Co Ltd, Nat Gas Branch Co, Daqing 163002, Peoples R China
来源：
OPTICAL REVIEW | 2020年 / 27卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Laser sensors; Interferometry; Semiconductor lasers; Phase unwrapping; FOURIER-TRANSFORM METHOD; SEMICONDUCTOR-LASER; OPTICAL FEEDBACK; DEMODULATION; MODULATION;
D O I：
10.1007/s10043-020-00600-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, a novel phase demodulation method for multiple self-mixing interferometry (MSMI) is proposed, which can improve the resolution and accuracy of vibration measurement in laser self-mixing interferometry (SMI). The sinusoidal phase modulation of the beam is obtained by an electro-optic modulator (EOM), and phase demodulation is performed by a lock-in amplifier analysis method. The phase equation of MSMI was derived and the theory of the lock-in amplification technique was analyzed in detail. The validity of the proposed method is confirmed by means of simulated signals and then demonstrated by several experimental measurements. The experimental results indicated a good correspondence between theory and experiment.
引用
收藏
页码：313 / 320
页数：8
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