Wave-front images of acoustic waves in the (100) and (001) surfaces of TeO2

Article

关键词: TIME-DOMAIN METHOD;    WAVELENGTH;    PULSES;   

DOI  :  10.1103/PhysRevB.66.075409

来源: SCIE

【 摘 要 】

Based on the finite-difference time-domain (FDTD) method, we study theoretically the wave-front images of acoustic waves propagating on the (100) and (001) surface of a highly anisotropic tetragonal TeO2 crystal for which imaging experiments have recently been conducted. The theoretical images well reproduce characteristic features observed experimentally. The group-velocity calculations of both surface and pseudosurface acoustic waves account for the shapes and locations of the major wave fronts obtained with the FDTD method. Additional weak wave-front structures that disappear rather quickly in time are attributed to bulk acoustic waves.

【 授权许可】

Free