Optodynamic characterization of shock waves after laser induced breakdown in water

In this paper, an optodynamic method for measurement of the shock wave front is presented. Two dimensional scanning was performed to determine the time-of-flight for each particular position of the probe beam. The interferometer part of the setup was used to accurately pinpoint the location of the laser induced breakdown. From the time-of-flight data we calculated the velocity field and found two regions of propagation of acoustic waves in water: a supersonic velocity region and a sonic velocity region. From the velocity the pressure amplitudes were calculated