Mainz 2026 – scientific programme

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MO: Fachverband Molekülphysik

MO 10: Poster – Ultrafast Structural Dynamics

MO 10.3: Poster

Tuesday, March 3, 2026, 17:00–19:00, Philo 1. OG

Phase-dependent modulation of H2 dissociation in a bichromatic laser field — •Nikolas Rapp, Weiyu Zhang, Thomas Pfeifer, and Robert Moshammer — Max-Planck-Institut für Kernphysik, Heidelberg

The ionization and dissociation dynamics of H2 were investigated using a Reaction Microscope (ReMi). A femtosecond laser is shaped by a Spatial Light Modulator (SLM), enabling spectral control of the pulse in terms of amplitude, polarization, and phase. With the SLM, the laser pulse is split into two frequency components, with variable relative phase and temporal delay. The change of different dissociation pathways in terms of energy and yield with varying phase will be presented and compared to TDSE simulations.

Keywords: Reaction Microscpoe; two-color fields; hydrogen dissociation