DocumentCode :
644626
Title :
THz quantum cascade laser-based quartz enhanced photo-acoustic sensor
Author :
Spagnolo, V. ; Borri, S. ; Patimisco, P. ; Sampaolo, Angelo ; Calabrese, Paolo P. ; Beere, H.E. ; Ritchie, D.A. ; Vitiello, M.S. ; Scamarcio, G.
Author_Institution :
Dipt. Interateneo di Fis., Univ. e Politec. di Bari, Bari, Italy
fYear :
2013
fDate :
1-6 Sept. 2013
Firstpage :
1
Lastpage :
3
Abstract :
We report on the first demonstration of a quartz enhanced photo-acoustic (QEPAS) sensor in the Terahertz (THz) range. The sensor is based on a QCL emitting at 3.93 THz and a customized quartz tuning fork. For methanol detection we reached a normalized noise-equivalent absorption of 2×10-10 cm-1W/Hz½ comparable with the best result of mid-IR QEPAS.
Keywords :
chemical variables measurement; crystal resonators; photoacoustic spectroscopy; quantum cascade lasers; quartz; sensors; QCL; QEPAS sensor; SiO2; frequency 3.93 THz; quartz enhanced photoacoustic sensor; quartz tuning fork; terahetz quantum cascade laser; Absorption; Frequency measurement; Methanol; Quantum cascade lasers; Resonant frequency; Sensitivity; Vibrations;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
Type :
conf
DOI :
10.1109/IRMMW-THz.2013.6665595
Filename :
6665595
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=644626
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