Time-reversal in an ultrasonic waveguide
- 7 April 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 70 (14) , 1811-1813
- https://doi.org/10.1063/1.118730
Abstract
The aim of this letter is to study, by using a time-reversal mirror (TRM), ways to overcome the distortions induced by multipaths in an acoustic transmission. A set of experiments is performed with a TRM made of 96 reversible transducers and results will be presented. One result is related to the high focusing property obtained with a TRM working in a bounded channel. It will be shown that the time-reversed beam is much thinner than the one measured in an unbounded medium. The second result concerns the time compression observed for the time-reversed acoustic pulse. The influence of the number of TRM elements on the time compression is discussed.Keywords
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