High-sensitive off-axis integrated cavity output spectroscopy and its measurement of ambient CO2 at 2 mu m

doi:10.7498/aps.65.053301

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院安徽光学精密机械研究所

	High-sensitive off-axis integrated cavity output spectroscopy and its measurement of ambient CO2 at 2 mu m
	Li Zhi-Bin 1,2; Ma Hong-Liang 1,2; Cao Zhen-Song1 ; Sun Ming-Guo 1; Huang Yin-Bo1 ; Zhu Wen-Yue 1; Liu Qiang 1
刊名	ACTA PHYSICA SINICA
	2016-03-05
卷号	65 期号:5 页码:1-7
关键词	Off-axis Integrated Cavity Co2 Wavelet Denoising
DOI	10.7498/aps.65.053301
文献子类	Article
英文摘要	An off-axis integrated cavity output spectroscopy (OA-ICOS) is established by using a fiber-coupled distributed feedback diode laser operating near 2 mu m. Its performances are evaluated and optimized through experimental investigation via detecting the pure CH4 absorptions at different pressures. The reflectivity of the cavity mirror is measured to be 0.99865, which results in the effective total optical pathlength of up to 407.4 m based on a 55 cm cavity. It is shown that the OA-ICOS configuration can be used to obtain very long optical pathlength, leading to pretty high sensitive monitoring of atmospheric trace gases. Based on the developed OA-ICOS, the atmospheric CO2 measurements are made and its performance is improved by using the wavelet denoising approach. The CO2 absorption line at 4993.7431 cm(-1) is used for measuring the concentration. The measured results are compared with the results obtaind by a commercial H2O/CO2 analyzer. Agreement and disagreement are briefly discussed, and the results show that the OA-ICOS is reliable for detecting the atmospheric trace gases. The limitation of the developed OA-ICOS and the further steps towards the improvement in precision and accuracy are also presented.
WOS关键词	ENHANCED ABSORPTION-SPECTROSCOPY ; ICOS ; N2O
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000377772000007
资助机构	National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021) ; National Natural Science Foundation of China(41205021)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22451]
专题	合肥物质科学研究院_中科院安徽光学精密机械研究所
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Composit & Opt Radiat, Hefei 220031, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li Zhi-Bin,Ma Hong-Liang,Cao Zhen-Song,et al. High-sensitive off-axis integrated cavity output spectroscopy and its measurement of ambient CO2 at 2 mu m[J]. ACTA PHYSICA SINICA,2016,65(5):1-7.
APA	Li Zhi-Bin.,Ma Hong-Liang.,Cao Zhen-Song.,Sun Ming-Guo.,Huang Yin-Bo.,...&Liu Qiang.(2016).High-sensitive off-axis integrated cavity output spectroscopy and its measurement of ambient CO2 at 2 mu m.ACTA PHYSICA SINICA,65(5),1-7.
MLA	Li Zhi-Bin,et al."High-sensitive off-axis integrated cavity output spectroscopy and its measurement of ambient CO2 at 2 mu m".ACTA PHYSICA SINICA 65.5(2016):1-7.