@inproceedings{f274f82559a14c54a7045382c186bec8,
title = "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",
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.",
keywords = "QCLOPS, Quantum Cascade Laser, Spectroscopy, Stand-off detection, gas measurement, gas sensor, intra-pulse spectroscopy, lidar, methane, nitrous oxide, optical absorption spectroscopy",
author = "Paulo Castillo and Adrian Diaz and Benjamin Thomas and Barry Gross and Fred Moshary",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Remote Sensing of Clouds and the Atmosphere XX ; Conference date: 23-09-2015 Through 24-09-2015",
year = "2015",
doi = "10.1117/12.2195169",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kassianov, {Evgueni I.} and Picard, {Richard H.} and Klaus Schafer and Adolfo Comeron and Konradin Weber",
booktitle = "Remote Sensing of Clouds and the Atmosphere XX",
address = "United States",
}