Berlin 2014 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 4: Laser-Materie-Wechselwirkung und Laseranwendungen I
K 4.1: Vortrag
Dienstag, 18. März 2014, 11:15–11:30, SPA SR203
Laser-induced cavitation bubbles near surfaces — Christian Menninger1,2, Marvin Tammen1,2, •Yun Kai1, Bernd Meyerer1, Walter Garen1, and Ulrich Teubner1,2 — 1Institut für Lasertechnik Ostfriesland, Hochschule Emden/Leer, University of Applied Sciences, Constantiaplatz 4, 26723 Emden, Germany — 2Institut für Physik, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany
Applying a nanosecond frequency-doubled Nd:YAG laser, cavitation bubbles can be induced in liquids. During the evolution process of the bubbles, shock waves can be generated. Within the scope of the experiments, cavitation bubbles are generated near the liquid (currently distilled water) surface. The interaction between the shock waves and the liquid surface is studied. Using shadow procedure, the water jet on the surface and the rarefaction waves are investigated with a high-speed CCD camera together with a second Nd:YAG laser as light source. The phenomena observed in these experiments are analogues to those that may be present in turbines or hydraulic systems.