Shape Optimization of an Open Photoacoustic Resonator

Said Ali Said El-Busaidy, Bernd Baumann, Marcus Wolff*, Lars Duggen

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Abstrakt

Photoacoustic (PA) measurements with open resonators usually provide poor detection sensitivity due to signal leakage at the resonator opening. We have recently demonstrated three different approaches for modelling the photoacoustic signal of open resonators. In this work, one of the approaches is applied for the optimization of the geometry of the T-shaped resonator for improved signal strength and thus sensitivity. The results from the numerical optimization show an increase in the photoacoustic signal by a factor of approximately 7.23. They are confirmed using numerical methods other than the one applied for the optimization and by experimental measurement. The measurement shows an increase in the photoacoustic signal by a factor of approximately 2.34.
OriginalsprogEngelsk
Artikelnummer2571
TidsskriftApplied Sciences
Vol/bind11
Udgave nummer6
Antal sider11
DOI
StatusUdgivet - 2021

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