Acta Optica Sinica, Volume. 24, Issue 12, 1643(2004)
Shock Wave and Cavitation Effects by Laser Ablation of Metal in Water
Laser-induced plasma shock wave and cavitation bubble by pulsed laser ablation of a metal in water are investigated by a high-sensitive optical beam deflection technique. The experimental results present the laser-produced plasma shock waves propagation, the detachment of the shock wave from bubble wall, cavitation bubble oscillation and bubble-collapse-induced shock waves generation in the vicinity of a solid boundary. It is shown that with the increase of the number of oscillating cycles, the maximum and minimum bubble radii are decreased sharply, as well as the corresponding oscillating durations. The minimum bubble radius is determined by the bubble energy and gas-vapor content in a cavity. The duration of bubble expansion is obviously longer than that of contraction during the same oscillating cycle.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Shock Wave and Cavitation Effects by Laser Ablation of Metal in Water[J]. Acta Optica Sinica, 2004, 24(12): 1643