Dresden 2017 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 9: Poster Session

DF 9.16: Poster

Dienstag, 21. März 2017, 14:00–16:00, P1C

Strong field scattering from lattice defects — •Lukas Medišauskas, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 D-01187 Dresden

Electron scattering from point defects in dielectrics driven by strong and low frequency laser fields close to the dielectric breakdown of the solid is investigated. The results reveal a strongly non-perturbative nature of the scattering process. Namely, multiphoton absorption to several bands and multiple scattering plateaus reminiscent of strong-field scattering in atoms can be observed in the energy resolved spectra. Intensity scaling of the spectra reveals band structure modification due top the strong laser field.

Kramers-Henneberger frame and Floquet approaches are employed. An efficient numerical method is developed to describe the scattering process in a regime where hundreds of Floquet states become important. This approach allows to compare scattering in different physical systems that may have very different final state.