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Optodynamic characterization of shock waves after laser-induced breakdown in water

Optodynamic characterization of shock waves after laser-induced breakdown in water

Optics Express 13(11): 4107-4112

Plasma and a cavitation bubble develop at the site of laser-induced breakdown in water. Their formation and the propagation of the shock wave were monitored by a beam-deflection probe and an arm-compensated interferometer. The interferometer part of the setup was used to determine the relative position of the laser-induced breakdown. The time-of-flight data from the breakdown site to the probe beam yielded the velocity, and from the velocity the shock-wave pressure amplitudes were calculated. Two regions were found where the pressure decays with different exponents, pointing to a strong attenuation mechanism in the initial phase of the shock-wave propagation.

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Accession: 054778774

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PMID: 19495322

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