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Proceedings Paper

Active stand-off detection of gas leaks using an open-path quantum cascade laser sensor in a backscatter configuration
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Paper Abstract

Fugitive gas emissions from agricultural or industrial plants and gas pipelines are an important environmental concern as they can contribute to the global increase of greenhouse gas concentration. Moreover, they are also a security and safety concern because of possible risk of fire/explosion or toxicity. This study presents gas concentration measurements using a quantum cascade laser open path system (QCLOPS). The system retrieves the path-averaged concentration of N2O by collecting the backscattered light from a scattering target. The gas concentration measurements have a high temporal resolution (68 ms) and are achieved at sufficient range (up to 40 m, ~ 130 feet) with a detection limit of 0.4 ppm for N2O. Given these characteristics, this system is promising for mobile/multidirectional remote detection and evaluation of gas leaks.

Paper Details

Date Published: 13 May 2015
PDF: 7 pages
Proc. SPIE 9486, Advanced Environmental, Chemical, and Biological Sensing Technologies XII, 94860I (13 May 2015); doi: 10.1117/12.2179317
Show Author Affiliations
Adrian Diaz, City College of New York (United States)
Benjamin Thomas, City College of New York (United States)
Paulo Castillo, Brookhaven National Lab. (United States)
Barry Gross, City College of New York (United States)
Fred Moshary, City College of New York (United States)


Published in SPIE Proceedings Vol. 9486:
Advanced Environmental, Chemical, and Biological Sensing Technologies XII
Tuan Vo-Dinh; Robert A. Lieberman; Günter G. Gauglitz, Editor(s)

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