Infrared Dual-Gas CH4/C2H6 Sensor Using Two Continuous-Wave Interband Cascade Lasers

被引：43

作者：

Zheng, Chuantao ^{[1
,2
]}

Ye, Weilin ^{[2
,3
]}

Sanchez, Nancy P. ^{[4
]}

Gluszek, Aleksander K. ^{[2
]}

Hudzikowski, Arkadiusz J. ^{[2
]}

Li, Chunguang ^{[1
]}

Dong, Lei ^{[5
]}

Griffin, Robert. J. ^{[4
]}

Tittel, Frank K. ^{[2
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

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

[3] Shantou Univ, Coll Engn, Shantou 515063, Peoples R China

[4] Rice Univ, Dept Civil & Environm Engn, Houston, TX 77005 USA

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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 21期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Laser sensors; spectroscopy; infrared; semiconductor lasers; quantum cascade; SPECTROSCOPY; METHANE;

D O I：

10.1109/LPT.2016.2594028

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An infrared dual-gas sensor system for the simultaneous detection and monitoring of methane (CH4) and ethane (C2H6) at parts-per-billion by volume (ppbv) concentration levels was developed using two room temperature, distributed feedback interband cascade lasers, and two miniature multipass cells with an effective absorption length of 54.6 m. Laser direct absorption spectroscopy was used to detect CH4 utilizing the 3038.5-cm(-1) absorption line, and second-harmonic wavelength modulation spectroscopy method was used to detect C2H6 using the 2996.88-cm(-1) absorption line. The 1 sigma CH4 detection limit is similar to 2.7 ppbv with a 1-s averaging time and exhibits a minimum value of similar to 1.7 ppbv for a 9-s averaging time; the 1s C2H6 detection limit is similar to 2.6 ppbv with a 3.4-s averaging time and shows an optimum averaging time of 65 s corresponding to a stability of similar to 0.36 ppbv. Using the dual-gas sensor system, 24 h monitoring of the two atmospheric gases was performed in the Greater Houston area, TX, USA.

引用

页码：2351 / 2354

页数：4

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