A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4. 8 mu m to Detect Carbon Monoxide

	A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4. 8 mu m to Detect Carbon Monoxide
	Chen C.; Wang B.; Li C. G.; Li J.; Wang Y. D.
	2014
发表期刊	Spectroscopy and Spectral Analysis
ISSN	ISBN/1000-0593
卷号	34 期号:3 页码:838-842
摘要	Presented in the present paper is a compact instrument developed for rapid, sensitive and continuous monitoring of trace gases in air, with results shown for carbon monoxide concentration. This instrument takes advantage of recent technology in mid-infrared quantum cascaded laser (QCL) operating at 4. 8 mu m and mercury cadmium telluride (HgCdTe) mid-infrared (MIR) detector, combing MLR multipass herriott cell with 76 m absorption path length to obtain low detection sensitivity down to 50 nmol . mol(-1) level in 4 s acquisition time. Meanwhile, in order to eliminate the instability induced by electrically modulated light source and effectively improve detection limit of the instrument, an optical structure with dual channel path was designed which is based on differential optical absorption spectroscopy method. The experimental results show that the instrument integrated with gas concentration inversion algorithm can be applied to in-situ measurements of trace gases without calibration. Additionally, operator could substitute a QCL operating at a different wavelength to measure other gases.
收录类别	SCI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43702
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Chen C.,Wang B.,Li C. G.,et al. A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4. 8 mu m to Detect Carbon Monoxide[J]. Spectroscopy and Spectral Analysis,2014,34(3):838-842.
APA	Chen C.,Wang B.,Li C. G.,Li J.,&Wang Y. D..(2014).A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4. 8 mu m to Detect Carbon Monoxide.Spectroscopy and Spectral Analysis,34(3),838-842.
MLA	Chen C.,et al."A Trace Gas Sensor Using Mid-Infrared Quantum Cascaded Laser at 4. 8 mu m to Detect Carbon Monoxide".Spectroscopy and Spectral Analysis 34.3(2014):838-842.

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