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Trace gas sensing using quantum cascade lasers and optoacoustic detection
- Source :
- Proceedings of SPIE, the International Society for Optical Engineering 7222 (2009). doi:10.1117/12.813678, info:cnr-pdr/source/autori:Spagnolo, Vincenzo; Elia, Angela; Di Franco, Cinzia; Lugara, Pietro Mario; Vitiello, Miriam S.; Scamarcio, Gaetano/titolo:Trace gas sensing using quantum cascade lasers and optoacoustic detection/doi:10.1117%2F12.813678/rivista:Proceedings of SPIE, the International Society for Optical Engineering/anno:2009/pagina_da:/pagina_a:/intervallo_pagine:/volume:7222
- Publication Year :
- 2009
- Publisher :
- SPIE, 2009.
-
Abstract
- We report on the realization of a optoacoustic sensor based on mid-infrared quantum-cascade lasers (QCLs) for the detection of nitric oxide (NO) and formaldehyde (CH(2)O). A resonant photoacoustic cell equipped with 4 electret microphones was excited in its first longitudinal mode by the modulated laser light. A detection limit for of 300 parts in 10(9) (ppbv) for NO and 150 ppbv for CH(2)O is found, using distributed feedback QCLs operating in pulsed mode at 5.34 mu m and 5.6 mu m, respectively.
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Proceedings of SPIE, the International Society for Optical Engineering 7222 (2009). doi:10.1117/12.813678, info:cnr-pdr/source/autori:Spagnolo, Vincenzo; Elia, Angela; Di Franco, Cinzia; Lugara, Pietro Mario; Vitiello, Miriam S.; Scamarcio, Gaetano/titolo:Trace gas sensing using quantum cascade lasers and optoacoustic detection/doi:10.1117%2F12.813678/rivista:Proceedings of SPIE, the International Society for Optical Engineering/anno:2009/pagina_da:/pagina_a:/intervallo_pagine:/volume:7222
- Accession number :
- edsair.doi.dedup.....30a270f5159b5a3193d7d0f894605abf
- Full Text :
- https://doi.org/10.1117/12.813678