Characterization of broadband fiber optic line detectors for photoacoustic tomography

Authors

  • Thomas Berer,

    Corresponding author
    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
    2. Christian Doppler Laboratory for Photoacoustic Imaging and Laser Ultrasonics, Altenberger Straße 69, 4040 Linz, Austria
    • Phone: +43 732 2468 4650, Fax: +43 732 2468 4606
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  • Istvan A. Veres,

    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
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  • Hubert Grün,

    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
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  • Johannes Bauer-Marschallinger,

    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
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  • Karoline Felbermayer,

    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
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  • Peter Burgholzer

    1. Research Center for Non-Destructive Testing GmbH RECENDT, Altenberger Straße 69, 4040 Linz, Austria
    2. Christian Doppler Laboratory for Photoacoustic Imaging and Laser Ultrasonics, Altenberger Straße 69, 4040 Linz, Austria
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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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