Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 34: Atoms in Strong Fields I
A 34.3: Vortrag
Freitag, 10. März 2017, 11:45–12:00, N 2
Velocity Map Imaging and Semi-classical analysis of Scattering Dynamics in Orthogonal Two-color Fields — •Daniel Würzler1,2, Max Möller1,2, Nicolas Eicke3, Daniel Seipt1,2, Max Sayler1,2, Stephan Fritzsche1,2, Manfred Lein3, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum-Electronics, Max-Wien-Platz 1, D-07743 Jena, Germany — 2Helmholtz-Institute Jena, Froebelstieg 3, D-07743 Jena, Germany — 3Institute for Theoretical Physics, Appelstraße 2, D-30167 Hannover, Germany
Tuning the relative phase of orthogonal two-color laser fields has become an important technique to get insight/control into sub-cycle electron dynamics of strong-field ionization processes. Here this technique is applied to velocity map imaging spectroscopy using an unconventional orientation with the polarization of the ionizing laser field perpendicular to and the steering field parallel to the detector surface. We measure the phase-dependent photoelectron momentum distribution of Neon and Xenon and analyse them by using semi-classical calculations in three dimensions including elastic scattering at different orders of return. The results are confirmed with the solution of three-dimensional time-dependent Schrödinger equation (3D TDSE) calculations. Thereby control over direct and rescattered electrons is demonstrated.