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

Adrian Diaz, Benjamin Thomas, Paulo Castillo, Barry Gross, Fred Moshary

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationAdvanced Environmental, Chemical, and Biological Sensing Technologies XII
EditorsTuan Vo-Dinh, Robert A. Lieberman, Gunter G. Gauglitz
PublisherSPIE
ISBN (Electronic)9781628416022
DOIs
StatePublished - Jan 1 2015
Externally publishedYes
EventAdvanced Environmental, Chemical, and Biological Sensing Technologies XII - Baltimore, United States
Duration: Apr 20 2015Apr 21 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9486

Other

OtherAdvanced Environmental, Chemical, and Biological Sensing Technologies XII
CountryUnited States
CityBaltimore
Period4/20/154/21/15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Keywords

  • Gas measurement
  • Gas sensor
  • Intra-pulse spectroscopy
  • Lidar
  • Nitrous oxide
  • Open-path
  • Optical absorption spectroscopy
  • QCLOPS
  • Quantum Cascade Laser
  • Spectroscopy
  • Stand-off detector

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  • Cite this

    Diaz, A., Thomas, B., Castillo, P., Gross, B., & Moshary, F. (2015). Active stand-off detection of gas leaks using an open-path quantum cascade laser sensor in a backscatter configuration. In T. Vo-Dinh, R. A. Lieberman, & G. G. Gauglitz (Eds.), Advanced Environmental, Chemical, and Biological Sensing Technologies XII [94860I] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9486). SPIE. https://doi.org/10.1117/12.2179317