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Proceedings Paper

External cavity quantum cascade laser based gas sensor for chemical detection
Author(s): Jing Yu; Qiming Lv; Jingsong Li
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Paper Abstract

Mid-infrared (MIR) laser spectroscopy is a powerful analytical tool for trace gases sensing, since a number of atmospheric pollutants and greenhouse gases have strong fundamental vibrational transitions within this spectral range. Here, we report the development of mid-infrared spectroscopy techniques coupled with a broadband tunable external-cavity (EC) mode-hop-free quantum cascade laser (QCL) operating between 6.96 and 8.85 μm. The ECQCL sensor was evaluated for quantitative and qualitative analysis of volatile organic compound (VOC) components. For signal processing, a self-established spectral analysis model integrated with various algorithms was developed for VOC spectral analysis. A good agreement was obtained between the experimentally observed spectra and the standard reference spectra taken from Pacific Northwest National Laboratory (PNNL) database.

Paper Details

Date Published: 7 November 2018
PDF: 5 pages
Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 108320J (7 November 2018); doi: 10.1117/12.2506670
Show Author Affiliations
Jing Yu, Anhui Univ. (China)
Qiming Lv, Anhui Univ. (China)
Jingsong Li, Anhui Univ. (China)


Published in SPIE Proceedings Vol. 10832:
Fifth Conference on Frontiers in Optical Imaging Technology and Applications
Junhao Chu; Wenqing Liu; Huilin Jiang, Editor(s)

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