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6 November 2001 Bragg imaging of profiled ultrasound using focused laser beams
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Proceedings Volume 4514, Acousto-Optics and Applications IV; (2001)
Event: Acousto-Optics and Applications IV, 2001, Gdansk-Jurata, Poland
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.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Vanaverbeke and Oswald Jozef Leroy "Bragg imaging of profiled ultrasound using focused laser beams", Proc. SPIE 4514, Acousto-Optics and Applications IV, (6 November 2001);


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