A sensitive methane sensor of a ppt detection level using a mid-infrared interband cascade laser and a long-path multipass cell

doi:10.1016/j.snb.2021.129641

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	A sensitive methane sensor of a ppt detection level using a mid-infrared interband cascade laser and a long-path multipass cell
	J. Xia; C. Feng; F. Zhu; S. Ye; S. Zhang; A. Kolomenskii; Q. Wang; J. Dong; Z. Wang; W. Jin and H. A. Schuessler
	2021
发表期刊	Sensors and Actuators, B: Chemical
ISSN	9254005
卷号	334
摘要	An ultra-high sensitivity sensor combining a mid-IR (MIR) interband cascade laser (ICL) at center wavelength of 3.37 m and a multi-pass cell (MPC) with a path-length of 580 m was designed and implemented for methane detection. The ultra-high sensitivity is achieved due to the higher absorbance in the MIR than in the near infrared (NIR), a long interaction path length, and the implementation of a wavelet denoising processing algorithm. The performance of the sensor was evaluated with direct absorption spectroscopy (DAS) and wavelength modulation spectroscopy (WMS) in a series of measurements. For the sensor working in the DAS measurement mode, the optimal set of sub-wavelet functions was chosen and utilized for denoising. A calibration gas with methane concentration of 2.0 ppm was measured with a relative error of 1%. The minimum of the Allan deviation of the sensor of 3 ppb was achieved with an averaging time of 200 s. For the WMS technique with the Allan deviation analysis the sensor detection limit for methane of 560 ppt with 290 s averaging time was determined, which is a significant improvement compared to our DAS results and previous reports. The developed sensor has broad applicability in the high-sensitivity measurements of methane and other trace gases. 2021 Elsevier B.V.
DOI	10.1016/j.snb.2021.129641
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65620
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. Xia,C. Feng,F. Zhu,et al. A sensitive methane sensor of a ppt detection level using a mid-infrared interband cascade laser and a long-path multipass cell[J]. Sensors and Actuators, B: Chemical,2021,334.
APA	J. Xia.,C. Feng.,F. Zhu.,S. Ye.,S. Zhang.,...&W. Jin and H. A. Schuessler.(2021).A sensitive methane sensor of a ppt detection level using a mid-infrared interband cascade laser and a long-path multipass cell.Sensors and Actuators, B: Chemical,334.
MLA	J. Xia,et al."A sensitive methane sensor of a ppt detection level using a mid-infrared interband cascade laser and a long-path multipass cell".Sensors and Actuators, B: Chemical 334(2021).

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