Volume 5, Issue 7 pp. 518-528
Full Article

Characterization of broadband fiber optic line detectors for photoacoustic tomography

Thomas Berer

Corresponding Author

Thomas Berer

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

Christian Doppler Laboratory for Photoacoustic Imaging and Laser Ultrasonics, Altenberger Straße 69, 4040 Linz, Austria

Phone: +43 732 2468 4650, Fax: +43 732 2468 4606Search for more papers by this author
Istvan A. Veres

Istvan A. Veres

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

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Hubert Grün

Hubert Grün

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

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Johannes Bauer-Marschallinger

Johannes Bauer-Marschallinger

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

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Karoline Felbermayer

Karoline Felbermayer

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

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Peter Burgholzer

Peter Burgholzer

Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria

Christian Doppler Laboratory for Photoacoustic Imaging and Laser Ultrasonics, Altenberger Straße 69, 4040 Linz, Austria

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First published: 27 February 2012
Citations: 43

Abstract

The frequency response of fiber optic line detectors is investigated in the presented paper. An analytical model based on oblique scattering of elastic waves is used to calculate the frequency dependent acousto-optical transfer functions of bare glass optical and polymer optical fibers. From the transfer functions the transient response of fibers detectors to photoacoustically excited spherical sources is derived. Photoacoustic tomography is simulated by calculating the temporal response of arrays of fiber optic line detectors and subsequent image reconstruction. The results show that the choice of the fiber material is of significant importance and influences the quality of imaging. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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