Open-path quantum cascade laser-based system for simultaneous remote sensing of methane, nitrous oxide, and water vapor using chirped-pulse differential optical absorption spectroscopy

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

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

Abstract

Methane and Nitrous Oxide are long-lived greenhouse gases in the atmosphere with significant global warming effects. We report on application of chirped-pulsed quantum cascade lasers (QCLs) to simultaneous measurements of these trace gases in both open-path fence-line and backscatter systems. The intra-pulse thermal frequency chip in a QCL can be time resolved and calibrated to allow for high resolution differential optical absorption spectroscopy over the spectral window of the chip, which for a DFB-QCL can be reach ∼ 2cm-1 for a 500 nsec pulse. The spectral line-shape of the output from these lasers are highly stable from pulse to pulse over long period of time (> 1 day), and the system does not require frequent calibrations.

Original languageEnglish (US)
Title of host publicationRemote Sensing of Clouds and the Atmosphere XX
EditorsEvgueni I. Kassianov, Richard H. Picard, Klaus Schafer, Adolfo Comeron, Konradin Weber
PublisherSPIE
Volume9640
ISBN (Electronic)9781628418507
DOIs
StatePublished - Jan 1 2015
Externally publishedYes
EventRemote Sensing of Clouds and the Atmosphere XX - Toulouse, France
Duration: Sep 23 2015Sep 24 2015

Other

OtherRemote Sensing of Clouds and the Atmosphere XX
CountryFrance
CityToulouse
Period9/23/159/24/15

All Science Journal Classification (ASJC) codes

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

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