Wave front reversal in acoustic phase conjugation by nonlinear electroacoustic interaction in LiNbO3

Abstract

Acoustic phase conjugate waves were generated at a frequency of 50 MHz by nonlinear electroacoustic interaction in LiNbO₃ and their wave front reversal property was experimentally examined. The wave front of the incident acoustic wave was deformed by inserting a phase object in the beam path, but the phase conjugate wave after retracing the path showed little influence of deformation.