Phase-control in two-dimensional phononic crystals

N. Swinteck (1) , S. Bringuier (1) , J.F. Robillard (2) , Jerome O. Vasseur (2) , Anne-Christine Hladky (2) , K. Runge (1) , P.A. Deymier (1)

1 University of Arizona
2 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

A theoretical model is developed to ascertain the necessary band structure and equi-frequency contour (EFC) features of two-dimensional phononic crystals (PCs) for the realization of phase control between propagating acoustic waves. Two different PCs, a square array of cylindrical polyvinylchloride inclusions in air and a triangular array of cylindrical steel inclusions in methanol, offer band structures and EFCs with highly dissimilar features. We demonstrate that PCs with EFCs showing non-collinear wave and group velocity vectors are ideal systems for controlling the phase between propagating acoustic waves. Finite-difference time-domain simulations are employed to validate theoretical models and demonstrate the control of phase between propagating acoustic waves in PC structures.

Domaines: Optique [physics.optics]

N. Swinteck, S. Bringuier, J.F. Robillard, Jerome O. Vasseur, Anne-Christine Hladky, et al.. Phase-control in two-dimensional phononic crystals. Journal of Applied Physics, 2011, 110 (7), pp.074507. ⟨10.1063/1.3641634⟩. ⟨hal-00639810⟩