Title :
Multi-species QEPAS based gas sensing using a wavelength-programmable diode laser source
Author :
Kosterev, Anatoliy A. ; Weidmann, Damien ; Tittel, Frank K. ; Walsh, Oliver ; McDonald, David ; Dunne, John
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX, USA
Abstract :
Quartz-enhanced photoacoustic spectroscopy (QEPAS) was combined with a wavelength-programmable near-IR tunable laser source to realize a compact prototype chemical gas sensor for multi-species analysis. The best QEPAS sensitivity achieved to date is /spl sim/4/spl times/10/sup -8/ cm/sup -1/ W//spl radic/Hz.
Keywords :
gas sensors; infrared sources; infrared spectroscopy; laser tuning; photoacoustic spectroscopy; quartz; remote sensing by laser beam; semiconductor lasers; spectrochemical analysis; Al/sub 2/O/sub 3/; QEPAS; chemical sensor; compact prototype sensor; diode laser source; gas sensing; gas sensor; multispecies analysis; near-IR laser source; quartz-enhanced photoacoustic spectroscopy; tunable laser source; wavelength-programmable laser;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
