Material anisotropy unveiled by random scattering of surface acoustic waves

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

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
40 Downloads (Pure)

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 languageEnglish
Article number063506
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume98
Issue number6
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Material anisotropy
  • Random scattering
  • Surface acoustic waves

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