Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection

doi:10.1002/mop.33168

HFCAS OpenIR

	Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection
	Tian, Xing 1,2; Cheng, Gang 1; Chen, Jiajin 3; Liu, Kun3
	2022-02-17
发表期刊	MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
ISSN	0895-2477
通讯作者	Cheng, Gang(chgmech@mail.ustc.edu.cn)
摘要	The number of reflections is increased as much as possible in the optical multi-pass absorption cell to improve the effective optical path, but easily affected by light overlap resulting in light path interference. We present a novel strategy for suppressing the optical interference and improving the signal-to-noise ratio (SNR) with the radio frequency (RF) bandwidth-limited white noise. A linear output spectral response of the intensity with the CH4 concentration between 50 ppmv and 180 ppmv with a distributed feedback laser (DFB) at 1.653 mu m was observed. The results show that the addition of RF noise effectively increases the laser line width and improves the SNR. About 3.6 gain in the SNR has been achieved using the RF noise, which led to a minimum detectable concentration of 0.03 ppmv (SNR = 1573). This performance level can reduce the difficulty of light adjustment and is very suitable for applications to trace gas sensing in harsh environment.
关键词	minimum detectable concentration optical interference radio frequency bandwidth-limited white noise signal-to-noise ratio
DOI	10.1002/mop.33168
关键词[WOS]	INDUCED THERMOELASTIC SPECTROSCOPY ; LASER
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[62105005] ; Natural Science Research Project of Anhui Universities[KJ2020A0290] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2015263]
项目资助者	National Natural Science Foundation of China ; Natural Science Research Project of Anhui Universities ; Youth Innovation Promotion Association of Chinese Academy of Sciences
WOS研究方向	Engineering ; Optics
WOS类目	Engineering, Electrical & Electronic ; Optics
WOS记录号	WOS:000756839300001
出版者	WILEY
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/127604
专题	中国科学院合肥物质科学研究院
通讯作者	Cheng, Gang
作者单位	1.Anhui Univ Sci & Technol, State Key Lab Min Response & Disaster Prevent & C, Huainan 232001, Peoples R China 2.Anhui Univ Sci & Technol, Sch Artificial Intelligence, Huainan, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Tian, Xing,Cheng, Gang,Chen, Jiajin,et al. Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2022.
APA	Tian, Xing,Cheng, Gang,Chen, Jiajin,&Liu, Kun.(2022).Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS.
MLA	Tian, Xing,et al."Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection".MICROWAVE AND OPTICAL TECHNOLOGY LETTERS (2022).