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Photoacoustic imaging using an adaptive interferometer with a photorefractive crystal
Author(s) -
Hochreiner Armin,
Berer Thomas,
Grün Hubert,
Leitner Michael,
Burgholzer Peter
Publication year - 2012
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.201100111
Subject(s) - interferometry , materials science , optics , photorefractive effect , crystal (programming language) , imaging phantom , detector , fourier transform , optoelectronics , physics , computer science , quantum mechanics , programming language
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 Bi 12 SiO 20 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)