Ultrafast dynamics of laser-excited solids: Theoretical description from excitation to material removal
by
Bärbel Rethfeld, TU Kaiserslautern
→
Europe/Berlin
AER 19, 4.14
AER 19, 4.14
Description
The interaction of ultrashort laser pulses with matter is of significant interest both to fundamental physics and industrial applications. In addition, femtosecond laser pulses have been extensively used to study fundamental physical processes in solids occuring on ultrashort time scales. The basic processes during laser ablation such as excitation, melting and material removal are temporally separated when femtosecond laser pulses are applied, allowing a separate investigation of each of them.
Here we present an overview of our theoretical investigations of dynamical processes occuring during and after irradiation of solids with an ultrashort laser pulse. We focus on nonequilibrium effects, in particular on necessary modifications of the description of materials reaction as compared to a near-equilibrium situation, which can usually be assumed on longer timescales.
Differences due to short-wavelength excitation as compared to visible light are discussed.