Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 46: Ultra-fast phenomena

HL 46.1: Vortrag

Freitag, 5. April 2019, 09:30–09:45, H31

Ultrafast x-ray scattering from laser-driven electronic systems — •Darya Gorelova1,2, David A. Reis3,4,5, and Robin Santra1,2,61Center for Free-Electron Laser Science, DESY, Notkestrasse 85, D-22607 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany — 3PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA — 4Department of Applied Physics, Stanford University, Stanford, California 94305, USA — 5Department of Photon Science, Stanford University, Stanford, California 94305, USA — 6Department of Physics, University of Hamburg, Jungiusstrasse 9, D-20355 Hamburg, Germany

We theoretically study x-ray scattering from an electronic system in the presence of a laser field driving electron dynamics in this system [1]. We apply Floquet theory to describe a laser-driven electronic system, and then obtain the scattering probability of an arbitrary nonresonant x-ray pulse from such a system employing the framework of quantum electrodynamics. We apply our theory for a calculation of a diffraction signal from a driven crystal in the regime of high harmonic generation. We connect the properties of the energy- and time-resolved diffraction signals to the properties of electron dynamics driven by the pump pulse.

[1] Daria Popova-Gorelova, David A. Reis and Robin Santra, accepted to Phys. Rev. B, arXiv:1811.02246.

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