Retro-focusing of Phase Conjugate Acoustic Beams in Nonlinear Inhomogeneous Media

摘要

Compensation of phase distortions by means of wave phase conjugation is considered for nonlinear mode of wave propagation in longitudinally and transversally layered media. In the framework of nonlinear geometrical acoustics high quality retro-focusing of the second harmonics generated by the phase conjugate beam is shown.