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Proceedings Paper

Bragg imaging of profiled ultrasound using focused laser beams
Author(s): S. Vanaverbeke; Oswald Jozef Leroy
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Paper Abstract

A model is presented for the acousto-optic interaction of a focused Gaussian laser beam with a profiled sound column in the Bragg regime. Expressions for the spectral distribution of the first diffraction orders are derived on the basis of a successive approximation method originally introduced by Aggarwal to study plane light wave diffraction by continuous plane ultrasonic waves [Proc. Ind. Acad. Sci. Sec. A 31, 417 (1950)]. It is shown that sharp images of the sound field in the first diffraction orders only occur in the focal plane of the laser beam after the sound column. The quality of the resulting images is investigated as a function of the initial beamwidth of the laser, the focal distance and the distance of the focusing lens from the sound column.

Paper Details

Date Published: 6 November 2001
PDF: 10 pages
Proc. SPIE 4514, Acousto-Optics and Applications IV, (6 November 2001); doi: 10.1117/12.447600
Show Author Affiliations
S. Vanaverbeke, Interdisciplinary Research Ctr. (Belgium)
Oswald Jozef Leroy, Interdisciplinary Research Ctr. (Belgium)


Published in SPIE Proceedings Vol. 4514:
Acousto-Optics and Applications IV

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