Acoustic time reversal with mode conversion at a solid-fluid interface

Carsten Draeger

doi:10.1063/1.121117

1998-03-30

PRE

DOI：10.1063/1.121117

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摘要

En 中文

Acoustic time-reversal experiments are mostly carried out in fluid media. This letter presents experiments proving the capability of a time-reversal mirror to obtain simultaneous focusing of both propagation modes inside a solid. The mirror is located in a surrounding fluid and records the longitudinal and transverse wavefronts (created by a laser impact on the solid) after conversion into pressure waves at the solid-fluid interface. We show that the time-reversed pressure wavefronts are reconverted mostly to their original propagation mode and focus simultaneously at the location of the laser impact. (C) 1998 American Institute of Physics.