Dynamics of laser-induced cavitation bubble near solid boundary

The dynamics of a laser-induced cavitation bubble created near solid boundary is investigated using a new force sensor together with a hydrophone. The experimental results indicate that liquid-jet formation and acoustic transient emission are general features of bubble dynamics liquid-jet formation occurs earlier than that of the acoustic transient. A comparison of the liquid jet energy and acoustic energy reveals that the acoustic transient, rather than the liquid jet, plays a vital role in the damping mechanism during the second collapse for gamma = 0.75 (gamma = L/R-max,R- where R-max being the maximum bubble radius and L denoting the distance of the cavity inception from the boundary): moreover the amplitudes of acoustic transients and liquid jet versus the nondimensional distance gamma are also derived. which are valuable in hydraulic Cavitation, laser lithotripsy and laser ophthalmology.