Volume 5, Issue 7 pp. 508-517
Full Article

Photoacoustic imaging using an adaptive interferometer with a photorefractive crystal

Armin Hochreiner

Corresponding Author

Armin Hochreiner

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

Phone: +43 732 2468 4654, Fax: +43 732 2468 4606Search for more papers by this author
Thomas Berer

Thomas Berer

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

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

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Hubert Grün

Hubert Grün

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

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Michael Leitner

Michael Leitner

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

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Peter Burgholzer

Peter Burgholzer

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

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

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First published: 21 February 2012
Citations: 36

Abstract

In this paper we report on remote three-dimensional photoacoustic imaging without the need for a coupling agent or other aids (e.g. detector foils) by utilizing a two-wave mixing interferometer (TWMI). In this technique the beams coming from sample and reference are brought to interfere in a Bi12SiO20 photorefractive crystal (PRC). Such a setup allows the measurement of ultrasonic displacements on rough sample surfaces. After data acquisition the initial pressure distribution is reconstructed by a Fourier domain synthetic aperture focusing technique (FSAFT). We present three-dimensional imaging of a hair ribbon phantom, on biological samples with embedded artificial blood vessels or pig bristles, and measurements on a human forearm in-vivo. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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