| Autor: |
B. Gross, Alex Cable, Arianna Elefante, Pietro Patimisco, Angelo Sampaolo, Marilena Giglio, Vincenzo Spagnolo, Frank K. Tittel, Verena Mackowiak, Vittorio M. N. Passaro, Hubert Rossmadl, Giansergio Menduni |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Quantum Sensing and Nano Electronics and Photonics XVI. |
| DOI: |
10.1117/12.2507909 |
| Popis: |
We report on a comparison between two quartz tuning forks (QTFs) employed for quartz-enhanced photoacoustic spectroscopy (QEPAS) having quadrupole and octupole electrode pattern configurations. With respect to the quadrupole, the implementation of the octupole pattern suppresses the fundamental mode and reduces by a factor of ~ 4.4 the electrical resistance for the first overtone mode with negligible variations of the related Q-factors. Both QTFs operating at the first overtone mode were implemented in a QEPAS sensor and the results showed that the octupole configuration provides a ~2.3 signal enhancement factor. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
