Investigating the displacement resolution of laser heterodyne detection system

doi:10.1016/j.optcom.2018.11.017

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

	Investigating the displacement resolution of laser heterodyne detection system
	C.H.Yan; T.F.Wang; Y.Y.Li; T.Lv; S.S.Wu
刊名	Optics Communications
	2019
卷号	435 页码:68-74
关键词	Heterodyne detection,Laser applications,Phase noise,performance,noise,Optics
ISSN号	0030-4018
DOI	10.1016/j.optcom.2018.11.017
英文摘要	In this paper, we provide a fairly standard derivation of the power spectrum of photocurrent and limited displacement resolution of laser heterodyne detection system. And the phase noise with different oscillation lineshapes of the heterodyne detection system is discussed. Based on the one-dimensional probability distribution model of phase noise, the minimum resolvable displacement and noise-equivalent mean square displacement are established, which represent the minimum detectable amplitude and noise limited resolution respectively. According to the numerical results, we obtain the variation of displacement resolution against the key parameters including the laser wavelength, the detection distance, the laser linewidth and the signal power. It reveals that the phase fluctuation has a significant effect on the power spectrum of photocurrent. Besides, both the probability density distribution of phase noise and displacement resolution have heavy dependence on laser oscillation lineshapes. And the noise-equivalent mean square displacement is inversely proportional to the root-meansquare of a measurable light power. The noise-equivalent mean square displacement can reach 3.5 X 10(-15)m/root Hz under the given parameters. Our findings provide a quantitative reference for the displacement resolution and engineering application of the heterodyne detection.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/62899]
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	C.H.Yan,T.F.Wang,Y.Y.Li,et al. Investigating the displacement resolution of laser heterodyne detection system[J]. Optics Communications,2019,435:68-74.
APA	C.H.Yan,T.F.Wang,Y.Y.Li,T.Lv,&S.S.Wu.(2019).Investigating the displacement resolution of laser heterodyne detection system.Optics Communications,435,68-74.
MLA	C.H.Yan,et al."Investigating the displacement resolution of laser heterodyne detection system".Optics Communications 435(2019):68-74.