High precision measurements of atmospheric nitrous oxide and methane using thermoelectrically cooled mid-infrared quantum cascade lasers and detectors

A compact, fast response, mid-infrared absorption spectrometer using thermoelectrically (TE) cooled pulsed quantum cascade (QC) lasers and TE detectors has been developed to demonstrate the applicability of QC lasers for high precision measurements of nitrous oxide and methane in the earth’s atmosph...

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Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2004-12, Vol.60 (14), p.3325-3335
Main Authors: Nelson, David D., McManus, Barry, Urbanski, Shawn, Herndon, Scott, Zahniser, Mark S.
Format: Article
Language:English
Subjects:
Air - analysis
Carbon Dioxide - analysis
Infrared absorption
Lasers
Methane
Methane - analysis
Nitrous oxide
Nitrous Oxide - analysis
Quantum cascade lasers
Spectrophotometry, Infrared - instrumentation
Time Factors
Vehicle Emissions - analysis
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Summary:A compact, fast response, mid-infrared absorption spectrometer using thermoelectrically (TE) cooled pulsed quantum cascade (QC) lasers and TE detectors has been developed to demonstrate the applicability of QC lasers for high precision measurements of nitrous oxide and methane in the earth’s atmosphere. Reduced pressure extractive sampling with a 56 m path length, 0.5 l volume, multiple pass absorption cell allows a time response of
ISSN:1386-1425
DOI:10.1016/j.saa.2004.01.033