[Host: Jongsoo Yoon]
Short (pico- and femtosecond) laser irradiation has the ability to bring materials into a highly non-equilibrium state where the electron temperature is high while the lattice is still cold. By using Molecular Dynamic (MD) simulation, we can study the kinetics and mechanisms of laser melting and ablation phenomena at the atomic level. In this talk, I will talk about our simulation results on ultrafast melting induced by strong laser irradiation in metals and coherent acoustic phonon generation by laser excitation. In addition, I will relate to recent experimental observation in time-resolved diffraction experiments in probing the structure dynamic under extreme conditions.
Condensed Matter Seminar
Thursday, March 23, 2006
Physics Building, Room 204
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