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Proceedings Paper

Comparison between interferometric and piezoelectric readout of tuning fork vibrations in quartz-enhanced photoacoustic spectroscopy
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Paper Abstract

We report on a comparison between the piezoelectric and interferometric readouts of vibrations in quartz tuning forks (QTFs) when employed as sound wave transducers in quartz-enhanced photoacoustic trace gas sensors. We demonstrate the possibility to properly design the QTF geometry to enhance interferometric readout signal with respect to the piezoelectric one and vice versa. When resonator tubes are acoustically coupled with the QTFs, signal-to-noise ratio enhancements are observed for both readout approaches. These results open the way to the implementation of optical readout of QTF vibrations in applications where external electromagnetic field could distort the piezoelectric signal.

Paper Details

Date Published: 24 February 2020
PDF: 7 pages
Proc. SPIE 11301, Novel In-Plane Semiconductor Lasers XIX, 113011S (24 February 2020); doi: 10.1117/12.2545664
Show Author Affiliations
P. Patimisco, Univ. and Politecnico of Bari (Italy)
S. Zou, VU Univ. Amsterdam (Netherlands)
S. dello Russo, Univ. and Politecnico of Bari (Italy)
A. Zifarelli, Univ. and Politecnico of Bari (Italy)
A. Sampaolo, Univ. and Politecnico of Bari (Italy)
M. Giglio, Univ. and Politecnico of Bari (Italy)
H. Rossmadl, Thorlabs GmbH (Germany)
V. Mackowiak, Thorlabs GmbH (Germany)
Alex Cable, Thorlabs, Inc. (United States)
D. Iannuzzi, VU Univ. Amsterdam (Netherlands)
V. Spagnolo, Univ. and Politecnico of Bari (Italy)

Published in SPIE Proceedings Vol. 11301:
Novel In-Plane Semiconductor Lasers XIX
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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