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

Patimisco P.;SPAGNOLO, Vincenzo Luigi;
2014

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.
FLAIR 2014 - Field Laser Applications in Industry and Research
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/25223
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