Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv - Level sensitivity using a T-shaped custom tuning fork

Hayden, Jakob; Giglio, Marilena; Sampaolo, Angelo; Spagnolo, Vincenzo; Lendl, Bernhard

doi:10.1016/j.pacs.2022.100330

Record link:

http://hdl.handle.net/20.500.12708/144294

Title:

Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv - Level sensitivity using a T-shaped custom tuning fork

Citation:

Hayden, J., Giglio, M., Sampaolo, A., Spagnolo, V., & Lendl, B. (2022). Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv - Level sensitivity using a T-shaped custom tuning fork. Photoacoustics, 25, Article 100330. https://doi.org/10.1016/j.pacs.2022.100330

Publisher DOI:

10.1016/j.pacs.2022.100330

CatalogPlus:

AC17202796

Publication Type:

Article - Original Research Article

Language:

English

Authors:

Hayden, Jakob
Giglio, Marilena
Sampaolo, Angelo
Spagnolo, Vincenzo
Lendl, Bernhard

Organisational Unit:

E164-02-1 - Forschungsgruppe Prozessanalytik

Journal:

Photoacoustics

ISSN:

2213-5979

Date (published):

Mar-2022

Number of Pages:

Publisher:

Elsevier

Peer reviewed:

Yes

Keywords:

Cavity enhanced spectroscopy; Costum quartz tuning fork; QEPAS; Quantum cascade laser; Trace gas sensing

Abstract:

Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N₂O and H₂O detection, operating at a wavelength of 4.59 µm. A quartz tuning fork with T-shaped prongs optimized for QEPAS has been employed. Exploiting the high signal-to-noise ratio attainable with this tuning fork together with an optical power amplification of ~100 enabled by efficient optical feedback locking, limits of detection (3σ, 10 s integration) of 260 ppt and 750 ppt for CO and N₂O have been reached.

Project title:

European Joint Doctorate Programme on Optical Sensing using Advanced Photo-Induced Effects: 860808 (European Commission)

Project (external):

Comet

Project ID:

868615

Research Areas:

Photonics: 70%
Environmental Monitoring and Climate Adaptation: 30%

Science Branch:

1040 - Chemie: 50%
1030 - Physik, Astronomie: 50%

License:

CC BY 4.0