Kiel 2011 – wissenschaftliches Programm

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K: Fachverband Kurzzeitphysik

K 5: Laserstrahlwechselwirkung, Lasermaterialbearbeitung I

K 5.1: Vortrag

Mittwoch, 30. März 2011, 11:15–11:30, HS D

Short pulse laser ablation of metals in an ambient gas: a hydrodynamic simulation — •David Autrique — TU Kaiserslautern, Department of Physics, Erwin-Schrödinger-Straße 46,67663 Kaiserslautern

A hydrodynamic model is presented for short pulse laser ablation of Cu in a background gas. Material decomposition and laser induced phase transitions are modeled by means of a multi-phase equation of state (eos). The model describes the heating, melting and evaporation of the target, the target-vapor interaction in the boundary layer as well as the vapor dynamics. Comparison is made with experimental data from literature, whenever available, and in general, reasonable agreement was achieved between our model predictions and experimental results. Therefore, the model can be useful to predict trends in target and plume characteristics, which are difficult to obtain experimentally.