Title :
Gas sensing with a 9 /spl mu/m thermoelectrically-cooled quasi-cw distributed feedback quantum cascade laser
Author :
Weidmann, Damien ; Kosterev, Anatoliy A. ; Tittel, Frank K. ; Aellen, Thierry ; Beck, Mattias ; Hofstetter, Daniel ; Faist, Jérôme ; Blaser, Stéphane
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX, USA
Abstract :
A compact trace gas sensor based on a thermoelectrically cooled quasi CW quantum cascade laser is reported. Direct absorption of SO/sub 2/ was used for laser characterization. 2f wavelength modulation spectroscopy was applied to ammonia monitoring.
Keywords :
ammonia; distributed feedback lasers; gas sensors; laser transitions; optical modulation; optical sensors; quantum cascade lasers; thermoelectricity; 2f wavelength modulation spectroscopy; 9 mum; NH/sub 3/; SO/sub 2/; ammonia monitoring; compact trace gas sensor; laser characterization; thermoelectrically-cooled quasicw distributed feedback quantum cascade laser;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
