| Literature DB >> 15587735 |
Gerard Wysocki1, Matt McCurdy, Stephen So, Damien Weidmann, Chad Roller, Robert F Curl, Frank K Tittel.
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 (1sigma) 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 Herriott cell of 36-m optical path length and 0.4-s acquisition time.Entities:
Year: 2004 PMID： 15587735 DOI： 10.1364/ao.43.006040
Source DB: PubMed Journal: Appl Opt ISSN： 1559-128X Impact factor: 1.980