A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH4, H2O and N2O

doi:10.1364/OE.469271

	A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH4, H2O and N2O
	Xue, Zhengyue 1,2; Shen, Fengjiao 3; Li, Jun 1,2; Liu, Xiaohai 2; Wang, Jingjing 2; Wang, Guishi 2; Liu, Kun 2; Chen, Weidong 4; Gao, Xiaoming 1,2; Tan, Tu 2
刊名	OPTICS EXPRESS
	2022-08-29
卷号	30
ISSN号	1094-4087
DOI	10.1364/OE.469271
通讯作者	Tan, Tu(tantu@aiofm.ac.cn)
英文摘要	The performance of a micro-electro-mechanical system (MEMS) modulator-based dual-channel mid-infrared laser heterodyne radiometer (MIR-LHR) was demonstrated in ground-based solar occultation mode for the first time. A MEMS mirror was employed as an alternative modulator to the traditional mechanical chopper, which makes the system more stable and compact. Two inter-band cascade lasers (ICL) centered at 3.53 mu m and 3.93 mu m, were employed as local oscillators (LO) to probe absorption lines of methane (CH4), water vapor (H2O) and nitrous oxide (N2O). The system stability greater than 1000 s was evaluated by Allan variance. The experimental MIR-LHR spectra (acquired at Hefei, China, on February 24th 2022) of two channels were compared and were in good agreement with simulation spectra from atmospheric transmission modeling. The mixing ratio of CH4, H2O and N2O were determined to be similar to 1.906 ppm, 3069 ppm and similar to 338 ppb, respectively. The reported MEMS modulator-based dual-channel MIR-LHR in this manuscript has great potential to be a portable and high spectral resolution instrument for remote sensing of multi-component gases in the atmospheric column. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
资助项目	Key Project of the National Natural Science Foundation of China[41730103] ; National Natural Science Foundation of China[42075128] ; Natural Science Foundation of Anhui Province[2208085QF218] ; Talent fund of Hefei University[20RC02]
WOS关键词	TRACE-GAS ; COLUMN ; SPECTROSCOPY ; PROFILES ; CO2
WOS研究方向	Optics
语种	英语
出版者	Optica Publishing Group
WOS记录号	WOS:000850229100026
资助机构	Key Project of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Talent fund of Hefei University
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128869]
专题	中国科学院合肥物质科学研究院
通讯作者	Tan, Tu
作者单位	1.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230031, Anhui, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China 3.Hefei Univ, Sch Adv Mfg Engn, Hefei 230601, Peoples R China 4.Univ Littoral Cote dOpale, Lab Physicochim Atmosphere, F-59140 Dunkerque, France
推荐引用方式 GB/T 7714	Xue, Zhengyue,Shen, Fengjiao,Li, Jun,et al. A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH4, H2O and N2O[J]. OPTICS EXPRESS,2022,30.
APA	Xue, Zhengyue.,Shen, Fengjiao.,Li, Jun.,Liu, Xiaohai.,Wang, Jingjing.,...&Tan, Tu.(2022).A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH4, H2O and N2O.OPTICS EXPRESS,30.
MLA	Xue, Zhengyue,et al."A MEMS modulator-based dual-channel mid-infrared laser heterodyne radiometer for simultaneous remote sensing of atmospheric CH4, H2O and N2O".OPTICS EXPRESS 30(2022).