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Tuesday, 16 December 2014

Konstantin: DM: Probing controlled dynamics

In this week's Journal Club I will discuss a proposed scheme to use the interference between short and long trajectories in HHG, so called Quantum Path Interference (QPI), to probe sub-femtosecond hole dynamics. The TDSE for a model H2 molecule in an intense IR field and a weaker UV field (resonant with the ionic transition between HOMO and HOMO-2) is solved numerically (idea and calculations by Suren Sukiasyan et al.). The population transfer driven by the resonant UV field changes the recombination probabilities of the short and long trajectories, leading to a change in QPI contrast. I will then discuss how we plan to implement this and similar experiments in the lab.