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2D imaging of ultrasound fields using CCD array to map output of Fabry-Perot polymer film sensor

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2 Author(s)
Lamont, M. ; Dept. of Med. Phys. & Bioeng., Univ. Coll. London, UK ; Beard, P.C.

A 2D ultrasound field imaging system that uses a CCD array to map the optical output of a planar Fabry-Perot polymer film sensing interferometer is described. This system enables ultrasound fields to be rapidly mapped over a 6.6×4.7 mm aperture with spatial and temporal resolutions of the order of 10 μm and 10 ns, respectively. The concept was successfully demonstrated by imaging the acoustic field at the focus of a pulsed 5 MHz PZT ultrasound transducer. The technique offers an alternative to piezoelectric-based methods for high-resolution biomedical and industrial ultrasonic imaging and field characterisation applications.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 3 )

Date of Publication:

2 Feb. 2006

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