Material anisotropy unveiled by random scattering of surface acoustic waves

V. Laude; Kimmo Kokkonen; S. Benchabane; M. Kaivola

doi:10.1063/1.3554424

Material anisotropy unveiled by random scattering of surface acoustic waves

V. Laude, Kimmo Kokkonen, S. Benchabane, M. Kaivola

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Abstract

We consider launching a monochromatic surface acoustic wave packet on a large set of random scatterers. The interference of the multiple scattered waves creates a random pattern of ripples on the crystal surface that is recorded by optical interferometry. The Fourier transform of the amplitude and phase data of the measured wave field unveils the complete slowness curve, i.e., the wave-vector as a function of the propagation angle. A simple acoustic speckle model is proposed to explain this observation.

Original language	English
Article number	063506
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	98
Issue number	6
DOIs	https://doi.org/10.1063/1.3554424
Publication status	Published - 2011
MoE publication type	A1 Journal article-refereed

Keywords

Material anisotropy
Random scattering
Surface acoustic waves

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abstract = "We consider launching a monochromatic surface acoustic wave packet on a large set of random scatterers. The interference of the multiple scattered waves creates a random pattern of ripples on the crystal surface that is recorded by optical interferometry. The Fourier transform of the amplitude and phase data of the measured wave field unveils the complete slowness curve, i.e., the wave-vector as a function of the propagation angle. A simple acoustic speckle model is proposed to explain this observation.",

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Material anisotropy unveiled by random scattering of surface acoustic waves

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Keywords

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