Title :
Chemical sensors based on quantum cascade lasers
Author :
Tittel, Frank K. ; Kosterev, Anatoliy A. ; Bakhirkin, Yury A. ; Roller, Chad B. ; Weidmann, Damien ; Curl, Robert F.
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX, USA
Abstract :
Quantum cascade lasers operating in the 3.5 to 24 micron spectral range can be used for trace gas detection in ambient air based on absorption spectroscopy. Recent advances in spectroscopic detection techniques have been employed to achieve minimum detectable absorption coefficients of 10-9 cm-1 in several real world applications.
Keywords :
chemical sensors; gas sensors; infrared spectra; quantum cascade lasers; 3.5 to 24 micron; absorption spectroscopy; chemical sensors; minimum detectable absorption coefficients; quantum cascade lasers; spectroscopic detection techniques; trace gas detection; Absorption; Chemical sensors; Distributed feedback devices; Electrons; Gas detectors; Gas lasers; Laser theory; Laser transitions; Quantum cascade lasers; Spectroscopy;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1279071
