Quadrature detection for self-mixing interferometry

doi:10.1364/ol.43.002154

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Quadrature detection for self-mixing interferometry
	Wu, J. F.; Shu, F. F.
刊名	Optics Letters
	2018
卷号	43 期号:9 页码:2154-2156
关键词	laser interference vibrometer phase Optics
ISSN号	0146-9592
DOI	10.1364/ol.43.002154
英文摘要	We establish a new quadrature detection system for self-mixing interferometry using two photodiodes and a 22.5-deg rotated beam splitter. The method is based on a rotating beam splitter placed between the laser diode and the measured object, and two quadrature self-mixing signals can be obtained. Then, an arctangent phase algorithm can be used to demodulate the quadrature signal to acquire the object vibration information. This method simplifies the self-mixing signal demodulation process and allows us to demodulate the vibrating displacement more easily. The experimental results demonstrate the feasibility of quadrature detection for self-mixing optical measurement. This Letter provides guidance for the design of self-mixing interferometers. (C) 2018 Optical Society of America
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/61116]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Wu, J. F.,Shu, F. F.. Quadrature detection for self-mixing interferometry[J]. Optics Letters,2018,43(9):2154-2156.
APA	Wu, J. F.,&Shu, F. F..(2018).Quadrature detection for self-mixing interferometry.Optics Letters,43(9),2154-2156.
MLA	Wu, J. F.,et al."Quadrature detection for self-mixing interferometry".Optics Letters 43.9(2018):2154-2156.