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

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 posit...

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Bibliographic Details
Published in:Optics express 2005-05, Vol.13 (11), p.4107-4112
Main Authors: Petkovsek, Rok, Mozina, Janez, Mocnik, Grisa
Format: Article
Language:English
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/opex.13.004107