ECQCL developments for rapid standoff chemical sensing

Mark C. Phillips, Brian E. Brumfield

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

4 Scopus citations


We present recent results on development of swept external cavity quantum cascade lasers (ECQCLs) for rapid and precise measurements of trace gases. Rapid tuning of a swept-ECQCL over its entire tuning range at rates up to 100 Hz and a spectral resolution of <0.2 cm-1 provides an important capability for detection of gas mixtures in transient sources such as chemical plumes. We present examples of using the swept-ECQCL for quantitative measurements of multicomponent gas-phase mixtures in turbulent plumes for standoff detection applications.

Original languageEnglish (US)
Title of host publicationMicro- and Nanotechnology Sensors, Systems, and Applications IX
EditorsAchyut K. Dutta, M. Saif Islam, Thomas George
ISBN (Electronic)9781510608894
StatePublished - 2017
Externally publishedYes
EventMicro- and Nanotechnology Sensors, Systems, and Applications IX 2017 - Anaheim, United States
Duration: Apr 9 2017Apr 13 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherMicro- and Nanotechnology Sensors, Systems, and Applications IX 2017
Country/TerritoryUnited States


  • gas sensing
  • Infrared spectroscopy
  • quantum cascade laser
  • standoff detection
  • tunable laser

ASJC Scopus subject areas

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


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