Pulsed quantum-cascade laser-based sensor for trace-gas detection of carbonyl sulfide

Gerard Wysocki, Matt McCurdy, Stephen So, Damien Weidmann, Chad Roller, Robert F. Curl, Frank K. Tittel

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Simultaneous exhaled carbonyl sulfide (OCS) and carbon dioxide concentration measurements in human breath are demonstrated with a compact pulsed quantum-cascade laser-based gas sensor. We achieved a noise-equivalent sensitivity (1σ) of 1.2 parts per billion by measuring a well-isolated OCS P(11) absorption line in the v3 band at 2057.6 cm-1 using an astigmatic Harriott cell of 36-m optical path length and 0.4-s acquisition time.

Original languageEnglish (US)
Pages (from-to)6040-6046
Number of pages7
JournalApplied Optics
Volume43
Issue number32
DOIs
StatePublished - Nov 10 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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