Freiburg 2024 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 22: Poster: Molecules in Strong Fields

MO 22.4: Poster

Donnerstag, 14. März 2024, 17:00–19:00, Tent C

Dynamics of Molecules in Intense Laser Fields Studied with a Reaction Microscope — •Martín Garro, Arne Senftleben, and Jochen Mikosch — Institut für Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany

Intense laser fields can drive coherent electronic dynamics in a molecule on a timescale faster than the optical cycle of the light field. Electron wavepackets released by field-assisted tunneling ionization can be accelerated and driven back to the ion core with substantial energy by the action of the oscillating laser field. Different attosecond processes may ensue upon return of the continuum wavepacket. Here we are particularly interested in the aspect of a laser-driven scattering experiment which leads to the diffraction of the wavepacket encoding structural information on the molecule.

A Reaction Microscope allows us to experimentally investigate the electron dynamics of molecules exposed to strong ionizing fields with coincidence detection of electron and ion momenta. On the one hand side, we will present our previous work on laser-driven rescattering with two different, simultaneously created electron wavepackets in the 1,3-butadiene molecule. We show that the return probability of the electron depends on the molecular frame and contains structural information of the ionized orbital. On the other hand we will discuss our progress towards recollision and diffraction experiments on chiral molecules at the University of Kassel.

Keywords: Reaction Microscope; Chiral molecules; LIED