Patent ID: 6973830

Claim:
A method, comprising: selecting a plurality of time reversal mirrors, each time reversal mirror comprising at least an exciter to impinge at least one exciter beam onto a remote mass to excite the mass, an optical probe to impinge at least one optical beam onto a vibrating surface of the excited mass to be reflected thereby, a laser vibrometer to detect at least part of the optical beam reflected by the vibrating surface of the excited mass and configured to generate signals indicative of the surface vibrations, and a modulator to modulate the at least one exciter beam generated by the exciter; disposing the time reversal mirrors in a predetermined array with respect to the remote mass; operating each one of the time reversal mirrors sequentially to excite the mass while operating the rest of the time reversal mirrors to generate signals indicative of the surface vibrations detected by their respective laser vibrometers; providing the signals generated by the time reversal mirrors to at least one processor to store and reverse the signals; and modulating each exciter beam in accordance with the reversed signals.