Berlin 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
K: Fachverband Kurzzeitphysik
K 5: Laser-Materie-Wechselwirkung und Laseranwendungen II
K 5.5: Vortrag
Dienstag, 18. März 2014, 15:00–15:15, SPA SR203
Prediction of ablation thresholds: Simulations and experiments in the fs-regime — •Daniel J. Förster1, Margit Wiedenmann1, Johannes Roth2, Rudolf Weber1, and Thomas Graf1 — 1Institut für Strahlwerkzeuge, Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart — 2Institut für funktionelle Materie und Quantentechnologien, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart
The ablation threshold of materials is an important quantity in short-pulse laser materials processing. Molecular dynamics (MD) simulations of metals irradiated by femtosecond laser pulses were performed to predict ablation thresholds. Materials are described in the nanometer scale by atoms given as point particles interacting via classical force fields. The results given by simulations with the MD program IMD in comparison to experimental results with a 800 nm laser system are discussed.