Atomistic modelling of ultrafast laser-induced melting in copper

M. Maigler; T. Held; D. O. Gericke; J. Schein; B. Rethfeld; S. H. Glenzer; M. Z. Mo

doi:10.1117/12.3012630

11 April 2024 Atomistic modelling of ultrafast laser-induced melting in copper

M. Maigler, T. Held, D. O. Gericke, J. Schein, B. Rethfeld, S. H. Glenzer, M. Z. Mo

Proceedings Volume 12939, High-Power Laser Ablation VIII; 129390Q (2024) https://doi.org/10.1117/12.3012630
Event: SPIE High-Power Laser Ablation, 2024, Santa Fe, New Mexico, United States

Abstract

We report a comprehensive numerical study on laser-induced melting of copper applying the two-temperature description combined with molecular dynamics simulations (TTM-MD). It reveals the internal energy relaxation and melting dynamics of thin copper films irradiated with an ultrafast laser pulse. The TTM-MD simulations were performed utilizing different expressions for the electronic properties of copper including the temperaturedependent heat capacity and the electron-phonon coupling strength. We study the resulting melting times and structural evolution of the lattice that were found to vary in the picosecond range. The importance of the correct choice of the electron-phonon coupling parameter is underlined by its large influence on the heating and melting times of the lattice.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. Maigler, T. Held, D. O. Gericke, J. Schein, B. Rethfeld, S. H. Glenzer, and M. Z. Mo "Atomistic modelling of ultrafast laser-induced melting in copper", Proc. SPIE 12939, High-Power Laser Ablation VIII, 129390Q (11 April 2024); https://doi.org/10.1117/12.3012630

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