Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room -temperature interband cascade laser

doi:10.1364/oe.391322

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	Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room -temperature interband cascade laser
	H. D. Zheng,Y. H. Liu,H. Y. Lin,R. F. Kan,P. Patimisco,A. Sampaolo,M. Giglio,W. G. Zhu,J. H. Yu,F. K. Tittel,V. Spagnolo and Z. Chen
	2020
发表期刊	Optics Express
ISSN	1094-4087
卷号	28 期号:13 页码:19446-19456
摘要	An ultra-highly sensitive and robust CH4 sensor is reported based on a 3.3 mu m interband cascade laser (ICL) and a low-noise differential photoacoustic (PAS) cell. The ICL emission wavelength targeted a fundamental absorption line of CH4 at 2988.795 cm(-1) with an intensity of 1.08 x 10(-19) cm/molecule. The double-pass and differential design of the PAS cell effectively enhanced the PAS signal amplitude and decreased its background noise. The wavelength modulation depth, operating pressure and V-T relaxation promotion were optimized to maximize the sensor detection limit. With an integration time of 90 s, a detection limit of 0.6 ppb was achieved. No additional water or air laser cooling were required and thereby allowing the realization of a compact and robust CH4 sensor. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
DOI	10.1364/oe.391322
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64925
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	H. D. Zheng,Y. H. Liu,H. Y. Lin,R. F. Kan,P. Patimisco,A. Sampaolo,M. Giglio,W. G. Zhu,J. H. Yu,F. K. Tittel,V. Spagnolo and Z. Chen. Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room -temperature interband cascade laser[J]. Optics Express,2020,28(13):19446-19456.
APA	H. D. Zheng,Y. H. Liu,H. Y. Lin,R. F. Kan,P. Patimisco,A. Sampaolo,M. Giglio,W. G. Zhu,J. H. Yu,F. K. Tittel,V. Spagnolo and Z. Chen.(2020).Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room -temperature interband cascade laser.Optics Express,28(13),19446-19456.
MLA	H. D. Zheng,Y. H. Liu,H. Y. Lin,R. F. Kan,P. Patimisco,A. Sampaolo,M. Giglio,W. G. Zhu,J. H. Yu,F. K. Tittel,V. Spagnolo and Z. Chen."Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room -temperature interband cascade laser".Optics Express 28.13(2020):19446-19456.

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