Material anisotropy unveiled by random scattering of surface acoustic waves

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2011
Major/Subject
Mcode
Degree programme
Language
en
Pages
063506
Series
Applied Physics Letters, Volume 98, Issue 6
Abstract
We consider launching a monochromatic surface acoustic wave packet on a large set of random scatterers. The interference of the multiple scatteredwaves 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.
Description
Keywords
surface acoustic waves, specle, acoustic waves, acoustic scattering, Fourier transforms, anisotropy
Other note
Citation
Laude, Vincent & Kokkonen, Kimmo & Benchabane, Sarah & Kaivola, Matti. 2011. Material anisotropy unveiled by random scattering of surface acoustic waves. Applied Physics Letters. Volume 98, Issue 6. ISSN 0003-6951 (printed). DOI: 10.1063/1.3554424.