Noncontact photoacoustic imaging based on all-fiber heterodyne interferometer

We report on a noncontact photoacoustic imaging system utilizing an all-fiber-optic heterodyne interferometer as an acoustic wave detector. The acoustic wave generated by a short laser pulse via the photoacoustic effect and arriving at the sample surface could be detected with the fiber-optic hetero...

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Bibliographic Details
Published in:Optics letters 2014-08, Vol.39 (16), p.4903-4906
Main Authors: Park, Seong Jun, Eom, Jonghyun, Kim, Yong Ho, Lee, Chang Su, Lee, Byeong Ha
Format: Article
Language:English
Subjects:
Acoustics
Algorithms
Detectors
Elasticity Imaging Techniques - instrumentation
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Image Enhancement - instrumentation
Imaging
Interferometers
Interferometry - instrumentation
Phantoms, Imaging
Photoacoustic effect
Photoacoustic Techniques - instrumentation
Reconstruction
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Description
Summary:We report on a noncontact photoacoustic imaging system utilizing an all-fiber-optic heterodyne interferometer as an acoustic wave detector. The acoustic wave generated by a short laser pulse via the photoacoustic effect and arriving at the sample surface could be detected with the fiber-optic heterodyne interferometer without physical contact or using an impedance matching medium. A phantom experiment was conducted to evaluate the proposed system, and the initial acoustic pressure distribution was calculated using a Fourier-based reconstruction algorithm. It is expected that the all-fiber-optic configuration of the proposed system can be applied as a minimally invasive diagnostic tool.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.39.004903