Simultaneous measurement of gas absorption and path length by employing the first harmonic phase angle method in wavelength modulation spectroscopy

doi:10.1364/OE.383744

HFCAS OpenIR

	Simultaneous measurement of gas absorption and path length by employing the first harmonic phase angle method in wavelength modulation spectroscopy
	Yang, Chenguang 1,2; Mei, Liang 3; Wang, Xingping 4; Deng, Hao 1; Hu, Mai 1; Xu, Zhenyu1 ; Chen, Bing 1; He, Yabai 1; Kan, Ruifeng 1,5
	2020-02-03
发表期刊	OPTICS EXPRESS
ISSN	1094-4087
通讯作者	Kan, Ruifeng(rfkan@ciomp.ac.cn)
摘要	Tunable diode laser absorption spectroscopy has been widely employed for gas sensing, where the gas concentration is often obtained from the absorption signal with a known or a fixed absorption path length. Nevertheless, there are also numerous applications in which the absorption path length is very challenging to retrieve, e.g., open path remote sensing and gas absorption in scattering media. In this work, a new approach, based on the wavelength modulation spectroscopy (WMS), has been developed to measure the gas absorption signal and the corresponding absorption path length simultaneously. The phase angle of the first harmonic signal (1f phase angle) in the WMS technique is utilized for retrieving the absorption path length as well as the gas absorption signal. This approach has been experimentally validated by measuring carbon dioxide (CO2) concentration in open path environment. The CO2 concentration is evaluated by measuring the reflectance signal from a distant object with hundreds of meters away from the system. The measurement accuracy of the absorption path length, evaluated from a 7-day continuous measurement, can reach up to 1%. The promising result has shown a great potential of utilizing the 1f phase angle for gas concentration measurements, e.g., open path remote sensing applications. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
DOI	10.1364/OE.383744
关键词[WOS]	MULTIPASS CELL
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China ; Chinese Ministry of Science and Technology[2016YFC0200600] ; Chinese Ministry of Science and Technology[2016YFC0302302] ; Chinese Ministry of Science and Technology[2016YFC1400604] ; Chinese Ministry of Science and Technology[2018YFC0213103] ; Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20170062]
项目资助者	National Key R&D Program of China ; Chinese Ministry of Science and Technology ; Instrument Developing Project of the Chinese Academy of Sciences
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000514570800052
出版者	OPTICAL SOC AMER
引用统计	被引频次：12[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/334002/103512
专题	中国科学院合肥物质科学研究院
通讯作者	Kan, Ruifeng
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 3.Dalian Univ Lechnol, Sch Optoelect Engn & Instrumentat Sci, Dalian 116024, Peoples R China 4.Univ Sci & Technol China, Dept Precise Machinery & Precise Instrument, Hefei 230027, Peoples R China 5.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Yang, Chenguang,Mei, Liang,Wang, Xingping,et al. Simultaneous measurement of gas absorption and path length by employing the first harmonic phase angle method in wavelength modulation spectroscopy[J]. OPTICS EXPRESS,2020,28.
APA	Yang, Chenguang.,Mei, Liang.,Wang, Xingping.,Deng, Hao.,Hu, Mai.,...&Kan, Ruifeng.(2020).Simultaneous measurement of gas absorption and path length by employing the first harmonic phase angle method in wavelength modulation spectroscopy.OPTICS EXPRESS,28.
MLA	Yang, Chenguang,et al."Simultaneous measurement of gas absorption and path length by employing the first harmonic phase angle method in wavelength modulation spectroscopy".OPTICS EXPRESS 28(2020).