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Optical Engineering

Acousto-optical reconstruction of pulsed ultrasonic signal
Author(s): Erik Blomme; Leroy Oswald
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Paper Abstract

In the Fresnel zone of laser light diffracted by a sound wave, the light intensity is modulated in both time and space, and the pattern of this modulation contains all the information about the time waveform of the diffracting sound wave. A method is proposed to recompose the sound wave from the optical signal, recorded during one ultrasonic pulse period in a single point in the Fresnel region of the diffracted light. The technique can be considered as a real-time reconstruction and is applicable to both continuous and pulsed ultrasonic waves for physical parameters within the range of Raman-Nath-type diffraction.

Paper Details

Date Published: 1 October 1992
PDF: 7 pages
Opt. Eng. 31(10) doi: 10.1117/12.58875
Published in: Optical Engineering Volume 31, Issue 10
Show Author Affiliations
Erik Blomme, Vrij Hoger Technisch Inst. (Belgium)
Leroy Oswald, Campus Kortrijk (Belgium)

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