Back to Search
Start Over
Clamp-type quartz tuning fork enhanced photoacoustic spectroscopy.
- Source :
-
Optics letters [Opt Lett] 2022 Sep 01; Vol. 47 (17), pp. 4556-4559. - Publication Year :
- 2022
-
Abstract
- In this Letter, clamp-type quartz tuning fork enhanced photoacoustic spectroscopy (Clamp-type QEPAS) is proposed and realized through the design, realization, and testing of clamp-type quartz tuning forks (QTFs) for photoacoustic gas sensing. The clamp-type QTF provides a wavefront-shaped aperture with a diameter up to 1 mm, while keeping Q factors > 10 <superscript>4</superscript> . This novel, to the best of our knowledge, design results in a more than ten times increase in the area available for laser beam focusing for the QEPAS technique with respect to a standard QTF. The wavefront-shaped clamp-type prongs effectively improve the acoustic wave coupling efficiency. The possibility to implement a micro-resonator system for clamp-type QTF is also investigated. A signal-to-noise enhancement of ∼30 times has been obtained with a single-tube acoustic micro resonator length of 8 mm, ∼20% shorter than the dual-tube micro-resonator employed in a conventional QEPAS system.
- Subjects :
- Spectrum Analysis methods
Quartz chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1539-4794
- Volume :
- 47
- Issue :
- 17
- Database :
- MEDLINE
- Journal :
- Optics letters
- Publication Type :
- Academic Journal
- Accession number :
- 36048703
- Full Text :
- https://doi.org/10.1364/OL.464334