Near-infrared methane sensor based on a distributed feedback laser

doi:10.1080/00387010.2019.1569063

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Near-infrared methane sensor based on a distributed feedback laser
	J.N.Wang; B.Li; G.Y.Lin; Q.J.Ma; S.R.Wang; M.X.Piao
刊名	Spectroscopy Letters
	2019
卷号	52 期号:2 页码:113-120
关键词	Absorption spectrum,distributed-feedback,lasers,interband cascade laser,absorption-spectroscopy,gas sensor,diode-laser,Spectroscopy
ISSN号	0038-7010
DOI	10.1080/00387010.2019.1569063
英文摘要	In this article, a near-infrared methane detection system using tunable diode laser absorption spectroscopy technology was designed and implemented. The distributed feedback laser was driven by a self-developed temperature and current controller to allow scanning the selected absorption wavelength at 1654nm. Laser temperature fluctuation was lower than 0.01%, and the output emission wavelength was linear and stable. The emitted beam passed a reflective gas chamber and was received by the Indium Gallium Arsenide photodiode detector. Through a data acquisition card, a digital lock-in amplifier was developed to extract the second harmonics with real-time monitoring and adjustment. Based on Allan deviation analysis, the limit of detection was about 48ppm with a path length of 30cm, at an integration time of 6s. The experimental results revealed a maximum detection error of less than 3% at a gas concentration higher than 100ppm. The fluctuations rates in long-term (9hr) stability measurements for 1x10(3)ppm and 1x10(4)ppm methane samples were 0.8% and 0.48%, respectively, indicating good stability for the sensor. In the control module design, compared with previous reports on methane detection systems, the current system uses a self-developed temperature controller, a current driver and a signal processor, to allow real-time display and adjustments. The potential for adjustable wavelength scanning is available for multi-gas detection based on a single detection system
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/63009]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J.N.Wang,B.Li,G.Y.Lin,et al. Near-infrared methane sensor based on a distributed feedback laser[J]. Spectroscopy Letters,2019,52(2):113-120.
APA	J.N.Wang,B.Li,G.Y.Lin,Q.J.Ma,S.R.Wang,&M.X.Piao.(2019).Near-infrared methane sensor based on a distributed feedback laser.Spectroscopy Letters,52(2),113-120.
MLA	J.N.Wang,et al."Near-infrared methane sensor based on a distributed feedback laser".Spectroscopy Letters 52.2(2019):113-120.