Quartz-enhanced photo-acoustic spectroscopy (QEPAS) is one of the most robust and sensitive trace-gas detection techniques, which in the mid-IR range offers the advantage of high sensitivity, compactness and fast time-response. One of the main features of the photoacoustic techniques is that no optical detection is re-quired. Thus, the use of the QEPAS technique in THz range would allow to avoid the use of low-noise but expensive, bulky and cryogenic bolometers. The results obtained in the development of QEPAS sensors for trace gas detection of several chemical species, employing mid-IR and THz laser sources will be reviewed. Nor-malized noise equivalent absorption coefficients (NNEA) down to 10-10 cm-1W/Hz½ and part per trillion concentration detection ranges have been attained.

Quartz Enhanced Photoacoustic Sensors for Trace Gas Detection in the IR and THz Spectral Range / Patimisco, Pietro; Borri, Simone; Sampaolo, Angelo; Vitiello, Miriam S.; Scamarcio, Gaetano; Spagnolo, Vincenzo (NATO SCIENCE FOR PEACE AND SECURITY SERIES. B, PHYSICS AND BIOPHYSICS). - In: THz and Security Applications : Detectors, Sources and Associated Electronics for THz Applications / [a cura di] Carlo Corsi, Fedir Sizov. - STAMPA. - Dordrecht : Springer, 2014. - ISBN 978-94-017-8827-4. - pp. 139-151 [10.1007/978-94-017-8828-1_8]

Quartz Enhanced Photoacoustic Sensors for Trace Gas Detection in the IR and THz Spectral Range

Pietro Patimisco;Angelo Sampaolo;Vincenzo Spagnolo
2014-01-01

Abstract

Quartz-enhanced photo-acoustic spectroscopy (QEPAS) is one of the most robust and sensitive trace-gas detection techniques, which in the mid-IR range offers the advantage of high sensitivity, compactness and fast time-response. One of the main features of the photoacoustic techniques is that no optical detection is re-quired. Thus, the use of the QEPAS technique in THz range would allow to avoid the use of low-noise but expensive, bulky and cryogenic bolometers. The results obtained in the development of QEPAS sensors for trace gas detection of several chemical species, employing mid-IR and THz laser sources will be reviewed. Nor-malized noise equivalent absorption coefficients (NNEA) down to 10-10 cm-1W/Hz½ and part per trillion concentration detection ranges have been attained.
2014
THz and Security Applications : Detectors, Sources and Associated Electronics for THz Applications
978-94-017-8827-4
Springer
Quartz Enhanced Photoacoustic Sensors for Trace Gas Detection in the IR and THz Spectral Range / Patimisco, Pietro; Borri, Simone; Sampaolo, Angelo; Vitiello, Miriam S.; Scamarcio, Gaetano; Spagnolo, Vincenzo (NATO SCIENCE FOR PEACE AND SECURITY SERIES. B, PHYSICS AND BIOPHYSICS). - In: THz and Security Applications : Detectors, Sources and Associated Electronics for THz Applications / [a cura di] Carlo Corsi, Fedir Sizov. - STAMPA. - Dordrecht : Springer, 2014. - ISBN 978-94-017-8827-4. - pp. 139-151 [10.1007/978-94-017-8828-1_8]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/13568
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