Simultaneous multi-gas detection between 3 and 4 μm based on a 2.5-m multipass cell and a tunable Fabry-Perot filter detector

被引：18

作者：

Li, Shangzhi ^{[1
,2
]}

Dong, Lei ^{[1
,2
]}

Wu, Hongpeng ^{[1
,2
]}

Yin, Xukun ^{[1
,2
,4
]}

Ma, Weiguang ^{[1
,2
]}

Zhang, Lei ^{[1
,2
]}

Yin, Wangbao ^{[1
,2
]}

Sampaolo, Angelo ^{[1
,3
]}

Patimisco, Pietro ^{[1
,3
]}

Spagnolo, Vincenzo ^{[1
,3
]}

Jia, Suotang ^{[1
,2
]}

Tittel, Frank K. ^{[4
]}

机构：

[1] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Shanxi, Peoples R China

[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

[3] Politecn Bari, PolySense Lab, Phys Dept, I-70100 Bari, Italy

[4] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 216卷

基金：

中国国家自然科学基金;

关键词：

Optical gas sensor; Fabry-Perot filter detector; Multi-gas detection; INTERBAND CASCADE LASER; NITRIC-OXIDE; ABSORPTION-SPECTROSCOPY; SENSOR; METHANE;

D O I：

10.1016/j.saa.2019.03.025

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We demonstrated a versatile and innovative gas sensing system based on a Fabry-Perot (FP) filter detector, which operates in the spectral range from 3.1 to 4.4 mu m (3226-2273 cm(-1)) with a spectral resolution of 20 nm. The developed sensor system can be used to record the entire spectrum by means of a one-time scan or, alternatively, to access selected spectral regions by using the tunable FP filter detector. A multipass cell with an effective path length of 2.5 m was implemented to improve the detection sensitivity. The spectra of methane, formaldehyde and carbon dioxide were simultaneously measured, with detection limits of 200 ppm, 900 ppm and 20 ppm, respectively. A seven-day continuous measurement for indoor carbon dioxide gas was carried out demonstrating the stability and robustness of the reported sensor system. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：154 / 160

页数：7

共 42 条

[1] Validation of Online Monitoring of PFC by QCL with FTIR Spectroscopy [J].