Modelling of open photoacoustic resonators.
Finite element simulation
Open resonator
Photoacoustics
Windowless resonator
Journal
Photoacoustics
ISSN: 2213-5979
Titre abrégé: Photoacoustics
Pays: Germany
ID NLM: 101622604
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
15
09
2019
revised:
18
12
2019
accepted:
07
01
2020
entrez:
6
2
2020
pubmed:
6
2
2020
medline:
6
2
2020
Statut:
epublish
Résumé
Photoacoustic spectroscopy employs acoustic resonators for signal amplification. Resonators are usually closed, however, in some applications, open resonators are preferred. The opening deteriorates the photoacoustic signal hence reducing the sensitivity of the photoacoustic measurement. We present two new approaches for simulating the photoacoustic signal in open resonators using finite element modelling. The approaches are based on the amplitude mode expansion model and the viscothermal model with the opening modelled using perfectly matched layers and the boundary element method respectively. Additionally, the performance of the viscothermal model using perfectly matched layers for simulating open resonators is extended to the ultrasound region. The simulation results are verified by comparing them to photoacoustic measurements. The approaches provide an accurate basis for designing and optimizing open resonators with high sensitivity.
Identifiants
pubmed: 32021797
doi: 10.1016/j.pacs.2020.100161
pii: S2213-5979(20)30001-X
pii: 100161
pmc: PMC6994304
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100161Informations de copyright
© 2020 The Author(s).
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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