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A: Fachverband Atomphysik

A 16: Interaction with strong or short laser pulses I

A 16.5: Vortrag

Mittwoch, 11. März 2020, 12:15–12:30, a320

Theoretical Prediction of the Attoclock Angle — •Soumi Dutta, Ulf Saalmann, and Jan Michael Rost — MPI für Physik komplexer Systeme , Nöthnitzer Str. 38, 01187 Dresden, Germany

An intense, low-frequency, elliptically-polarized laser field lets an electron tunnel from an atom and drives it on a quivering trajectory. The asymptotic angle, measured in the famous attoclock experiment, indicating the electron's release time, is spoiled by the so-called laser-Coulomb interaction. The trajectory from a fully equivalent description with the time-dependent Kramers-Henneberger potential, shows a remarkable similarity with a conventional Kepler hyperbola, albeit with some notable deviations. We discuss those deviations, devise a correction compensating for those and give an (approximate) analytical expression for the attoclock angle.