Optical Feedback Linear Cavity Ringdown Spectroscopy

doi:10.3389/fphy.2022.857371

	Optical Feedback Linear Cavity Ringdown Spectroscopy
	Wang, Xingping 3,4; Zhao, Gang 1,5; Jiao, Kang 1,5; Chen, Bing 4; Kan, Ruifeng 4; Cong, Zhenhua 2; Liu, Jianguo 4; Ma, Weiguang 1,5
刊名	FRONTIERS IN PHYSICS
	2022-02-16
卷号	10
关键词	CRDS laser absorption spectroscopy high sensitivity optical feedback Fabry-Perot cavity
ISSN号	2296-424X
DOI	10.3389/fphy.2022.857371
通讯作者	Zhao, Gang(gangzhao@sxu.edu.cn) ; Liu, Jianguo(jgliu@aiofm.ac.cn)
英文摘要	Optical feedback cavity ringdown spectroscopy is presented with a linear Fabry-Perot cavity and a cost-effective DFB laser. To circumvent the low coupling efficiency caused by the broad laser linewidth, an optical feedback technique is used, and an enhanced coupling efficiency of 31%, mainly limited by impedance mismatch and mode mismatch, is obtained. The trigger of the ringdown event is realized by the shutoff of the laser driving current, and a novel method with the aid of one electronic switch is applied to avoid the ringdown events excited by the unexpected cavity modes during the process of laser current recovery. As a result, the ringdown signal with a signal-to-noise ratio of 2500 is achieved. Through continuous monitoring, the fractional uncertainty of the empty cavity ringdown times is assessed to be 0.04%. An Allan variance analysis indicates a detection sensitivity of 4.3 x 10(-10) cm(-1) is resulted at an integration time of 120 s, even with a moderate finesse cavity. To further improve the long-term stability, we regularly rectify the empty cavity ringdown time, and an improvement factor of 2.5 is demonstrated.
资助项目	Chinese Academy of Sciences[ZDKYYQ20200006] ; National Natural Science Foundation of China[61875107] ; National Natural Science Foundation of China[61905136] ; National Natural Science Foundation of China[61905134] ; National Natural Science Foundation of China[62175139] ; National Natural Science Foundation of China[61805286] ; Opening Foundation of Key Laboratory of Laser and Infrared System (Shandong University), Ministry of Education
WOS关键词	ENHANCED ABSORPTION-SPECTROSCOPY ; DIODE-LASER ; NOISE ; SPECTROMETER ; REDUCTION ; MODE
WOS研究方向	Physics
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000764298400001
资助机构	Chinese Academy of Sciences ; National Natural Science Foundation of China ; Opening Foundation of Key Laboratory of Laser and Infrared System (Shandong University), Ministry of Education
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127939]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Gang; Liu, Jianguo
作者单位	1.Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devic, Taiyuan, Peoples R China 2.Shandong Univ, Sch Informat Sci & Engn, Jinan, Peoples R China 3.Univ Sci & Technol China, Dept Precise Machinery & Precise Instrument, Hefei, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei, Peoples R China 5.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xingping,Zhao, Gang,Jiao, Kang,et al. Optical Feedback Linear Cavity Ringdown Spectroscopy[J]. FRONTIERS IN PHYSICS,2022,10.
APA	Wang, Xingping.,Zhao, Gang.,Jiao, Kang.,Chen, Bing.,Kan, Ruifeng.,...&Ma, Weiguang.(2022).Optical Feedback Linear Cavity Ringdown Spectroscopy.FRONTIERS IN PHYSICS,10.
MLA	Wang, Xingping,et al."Optical Feedback Linear Cavity Ringdown Spectroscopy".FRONTIERS IN PHYSICS 10(2022).