The architecture and performance of four sensitive, selective and real-time gas sensor systems based on mid-infrared semiconductor lasers will be described [1-3]. High detection sensitivity at ppbv and pptv concentration levels requires sensitivity enhancement schemes such as tuneable laser diode absorption spectroscopy (TDLAS) [2, 3] and wavelength modulation spectroscopy (WMS), photo-acoustic absorption spectroscopy (PAS) or quartz-enhanced-PAS (QEPAS) [3-5]. These spectroscopic methods can achieve minimum detectable absorption losses in the range from 10-8 to 10-11 cm-1 W/√Hz.
Mid-Infrared Semiconductor Laser based Trace Gas Sensor Technologies: Recent Advances and Applications / Tittel, F. K.; Ren, W.; Sanchez, N. P.; Jiang, W.; Patimisco, P.; Spagnolo, Vincenzo Luigi; Griffin, R. G.. - (2014), pp. 52-52. (Intervento presentato al convegno FLAIR 2014 - Field Laser Applications in Industry and Research tenutosi a Firenze nel Maggio 2014).
Mid-Infrared Semiconductor Laser based Trace Gas Sensor Technologies: Recent Advances and Applications
Patimisco P.;SPAGNOLO, Vincenzo Luigi;
2014-01-01
Abstract
The architecture and performance of four sensitive, selective and real-time gas sensor systems based on mid-infrared semiconductor lasers will be described [1-3]. High detection sensitivity at ppbv and pptv concentration levels requires sensitivity enhancement schemes such as tuneable laser diode absorption spectroscopy (TDLAS) [2, 3] and wavelength modulation spectroscopy (WMS), photo-acoustic absorption spectroscopy (PAS) or quartz-enhanced-PAS (QEPAS) [3-5]. These spectroscopic methods can achieve minimum detectable absorption losses in the range from 10-8 to 10-11 cm-1 W/√Hz.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
