Carbonyl sulfide detection with a thermoelectrically cooled midinfrared quantum cascade laser

Chad Roller, Anatoliy A. Kosterev, Frank K. Tittel, Kiyoji Uehara, Claire Gmachl, Deborah L. Sivco

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

A compact absorption spectrometer with a midinfrared tunable quantum cascade laser operating at 4.86 μm (2054 cm-1) is used to measure lower concentrations of carbonyl sulfide (COS) in air. A detection sensitivity of ∼30 parts in 109 of COS and the selectivity of two stable isotopes, 12C16O32S and 12C 16O34S, are demonstrated. Specifically, the feasibility of detecting COS in expired human breath as a potential noninvasive medical diagnostic tool is investigated.

Original languageEnglish (US)
Pages (from-to)2052-2054
Number of pages3
JournalOptics Letters
Volume28
Issue number21
DOIs
StatePublished - Nov 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Carbonyl sulfide detection with a thermoelectrically cooled midinfrared quantum cascade laser'. Together they form a unique fingerprint.

  • Cite this