Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.49: Poster

Mittwoch, 8. März 2017, 17:00–19:00, P OG1

Non-Sequential Double Recombination High Harmonic Generation in Molecular-like Systems — •Kenneth Hansen and Lars Bojer Madsen — Department of Physics and Astronomy, Aarhus University, 8000 Aarhus

Non-sequential double recombination (NSDR) high harmonic generation (HHG) is a strongly correlated two-electron HHG process where two electrons combine their potential and kinetic energy into emitting single photon similar to the normal one-electron HHG process. We have studied this process in a molecular-like system and found that the two-electron nature of the signal results in the emitted HHG spectrum being dependent on the structure of the molecule of emission. A clear dependence on the internuclear distance is observed in the cutoffs of the HHG spectrum for even large internuclear distances where also an indication of the point of emission can be observed in the HHG spectrum. A change in the NSDR process in also observed where a change in the electron charge transfer in the molecule shifts the observed cutoffs in a process not seen in normal one-electron HHG