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.
Original language | English |
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Title of host publication | Novel In-Plane Semiconductor Lasers XIX |
Subtitle of host publication | [Proceedings] |
Editors | Alexey A. Belyanin, Peter M. Smowton |
Place of Publication | Washington, DC |
Publisher | SPIE |
Number of pages | 7 |
ISBN (Electronic) | 9781510633667 |
ISBN (Print) | 9781510633650 |
DOIs | |
Publication status | Published - 2020 |
Event | Novel In-Plane Semiconductor Lasers XIX 2020 - San Francisco, United States Duration: 3 Feb 2020 → 6 Feb 2020 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 11301 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Novel In-Plane Semiconductor Lasers XIX 2020 |
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Country/Territory | United States |
City | San Francisco |
Period | 3/02/20 → 6/02/20 |
Funding
The authors from Dipartimento Interateneo di Fisica di Bari acknowledge financial support from THORLABS GmbH, within the joint research laboratory PolySense.
Keywords
- Gas sensing
- Interferometry
- Quartz-enhanced photoacoustic spectroscopy
- Tuning fork