Time-reversed photoacoustic system and uses thereof

Details Time-reversed photoacoustic system and uses thereof Time-reversed photoacoustic system and uses thereof

2005-12-13

2005-12-13

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S643000, C600S407000, C600S439000, C600S443000

Reexamination Certificate

active

06973830

ABSTRACT:
A remote mass is excited by a plurality of beams generated sequentially by each one of a plurality of time reversal mirrors, and the surface vibrations of the excited mass are detected by a laser vibrometer in each of the time reversal mirrors. Each vibrometer generates a signal indicative of the surface vibrations which is stored, reversed in time, and applied to modulate the exciter beam impinged onto the mass by the respective time reversal mirror.

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patent: 6490469 (2002-12-01), Candy
patent: 6657732 (2003-12-01), Pepper et al.
patent: 2074732 (1981-11-01), None

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