Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.19: Poster

Wednesday, March 8, 2017, 17:00–19:00, P OG1

Two-timescale Kramers-Henneberger Bloch-Floquet approach for low frequency pulsed laser fields — •Lukas Medišauskas, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 D-01187 Dresden

An efficient numerical method to solve large Floquet problems in Kramers-Henneberger reference frame is proposed. A two-timescale formulation is used that enables to apply the Floquet picture for pulsed laser pulses. The approach is applied to the dynamics of atoms in strong and low frequency laser fields, where explicit treatment of few hundred Floquet states is necessary. Typical strong field effects like high harmonic generation and above threshold ionization are demonstrated. Finally, the existence of the so-called Kramers-Henneberger atom in strong laser field is addressed.