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Proceedings Paper

Fiber-based remote photoacoustic imaging utilizing a Mach Zehnder interferometer with optical amplification
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Paper Abstract

We present a remote photoacoustic imaging system without the need of a physical contact to the specimen. The setup is based on a Mach-Zehnder interferometer using optical wave guide technology as usually used in telecommunication industries, thus guaranteeing long life times and relatively low costs. A detection beam is transmitted through an optical fiber to a lens system which focuses the beam to the surface of a specimen. The back reflected light is than collected by the same lens system and coupled into the same optical fiber. As the collected light intensity is less than 0.1% of the transmitted intensity in forward direction an optical amplifier is used for amplifying the collected light. After amplification the light is brought to interference with a reference beam for demodulation of the ultrasound signals. The modulated light intensity is converted into electrical signals by a self-built balanced photo detector. We present noncontact photoacoustic imaging of a tissue-mimicking phantom and on chicken skin.

Paper Details

Date Published: 3 March 2014
PDF: 7 pages
Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 89436B (3 March 2014); doi: 10.1117/12.2039019
Show Author Affiliations
A. Hochreiner, RECENDT GmbH (Austria)
J. Bauer-Marschallinger, RECENDT GmbH (Austria)
P. Burgholzer, RECENDT GmbH (Austria)
Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)
T. Berer, RECENDT GmbH (Austria)
Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)

Published in SPIE Proceedings Vol. 8943:
Photons Plus Ultrasound: Imaging and Sensing 2014
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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