Title :
Recent advances of trace gas sensors based on diode and quantum cascade lasers
Author :
Tittel, Frank K. ; Kosterev, Anatoliy A. ; Bakhirkin, Yury A. ; Wysocki, Gerard ; Roller, Chad B. ; So, Stephen ; Weidmann, Damien ; Horstjann, Markus ; Curl, Robert F.
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX, USA
Abstract :
Diode and quantum cascade lasers can be used for trace gas detection in ambient air based on absorption and photoacoustic spectroscopy. Advances in spectroscopic detection techniques have resulted in minimum detectable absorbances of 10-5 in several applications.
Keywords :
gas sensors; photoacoustic spectroscopy; quantum cascade lasers; remote sensing by laser beam; spectrochemical analysis; absorption spectroscopy; detectable absorbances; diode lasers; photoacoustic spectroscopy; quantum cascade lasers; trace gas detection; trace gas sensors; Absorption; Acoustic signal detection; Diodes; Distributed feedback devices; Gas detectors; Gas lasers; Laser feedback; Laser transitions; Quantum cascade lasers; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE
Print_ISBN :
0-7803-8557-8
DOI :
10.1109/LEOS.2004.1363361
