Erlangen 2018 – scientific programme
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A: Fachverband Atomphysik
A 25: Poster Session I
A 25.24: Poster
Tuesday, March 6, 2018, 16:15–18:15, Redoutensaal
Strong field ionization with Bessel pulses — •Willi Paufler1, Birger Böning1, and Stephan Fritzsche1,2 — 1Friedrich-Schiller Universität, Jena, Germany — 2Helmholtz-Institut, Jena, Germany
Since twisted light beams draw interest in many parts of physics, it is also desired to understand their interaction with atoms and molecules. We apply a Quantum Trajectory Monte Carlo model (QTMC) to describe strong field ionization of atoms by twisted beams (Bessel beams) and calculate photoelectron momentum distributions (PEMD). Bessel beams are an infinite superposition of circularly polarized plane waves with the same helicity, whose wave vectors lie on a cone. Thus, we compare the obtained PEMD to those of strong field ionization by cicurlarly polarized pulses. We focus on the momentum distributions in propagation direction of the pulse and show how to these momentum distributions depend on experimental parameters, such as the opening angle of the beam or the impact parameter of the atom with regard to the beam axis.