2022•2022 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)Requires access
Polarization of Acoustic Modes in a Two-Dimensional Phononic Crystal
M. V. Marunin, N. V. Polikarpova
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Abstract
The acoustic properties of two-dimensional phononic crystals with a square lattice based on fused quartz are studied. Acoustic characteristics are obtained taking into account dispersion relations. Acoustic phase velocities and directions of their polarizations are calculated. It is shown that the spatial periodicity of phononic crystals leads to strong acoustic anisotropy. The dependence of the acoustic characteristics of phononic crystals on the unit cell parameters has been studied. It is established that the polarizations of the phonon modes of the crystal are mutually perpendicular for all directions of acoustic wave propagation. The aim of the study is to evaluate phononic crystals for their application in acousto-optics. The dependence of the acoustic characteristics of phononic crystals on the unit cell parameters has been studied.