title: Optodynamic characterization of shock waves after laser-induced breakdown in water.
abstract: 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.
authors.forename: Rok
authors.initials: R
authors.lastname: Petkovsek
authors.forename: Janez
authors.initials: J
authors.lastname: Mozina
authors.forename: Grisa
authors.initials: G
authors.lastname: Mocnik