3.1.4 - A new QEPAS sensor optimized for the use of multiple op-tical sources with reduced window absorption
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Chemical Sensors
- Author(s)
- I. Troadec, M. Duquesnoy, J. -M. Melkonian, R. Levy, M. Raybaut - Onera,Palaiseau (France)
- Pages
- 108 - 109
- DOI
- 10.5162/eurosensors2026/3.1.4
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
The development of sensitive, selective, multi-gas, fast and compact sensors to detect and identify polluting or toxic gases is a key challenge for public, industrial and military safety. We present a quartzenhanced photoacoustic spectroscopy (QEPAS) sensor using a custom quartz tuning fork coupled to an acoustic resonator. The design was optimized with finite element method (FEM) and adapted for an optical multi-pass of laser arrays. It was validated experimentally by measuring C 2 H 2 , showing the expected acoustic mode, the reduction of window background and a sensitivity of 1.10 -8 W.cm -1 .Hz -1/2 .