Virtual, via Zoom link
Prof. Dr. Nirit Dudovich | Weizmann Institute of Science, Israeltalks about
In this talk, I will describe advanced schemes for attosecond interferometry. Applying time domain interferometry, provided a direct insights into one of the most fundamental strong field phenomena – field induced tunneling, resolving its fundamental properties. Inducing spatial interferometers, by shaping 2D electron trajectories, we probed the spatial properties of tunneling in molecular systems. An alternative scheme applies attosecond interferometry based on an all-optical approach. By using two interfering phased-locked attosecond sources, we resolved the scattering phase associated with the basic mechanism underlying photoionization.
Going from gas phase into solid state systems opens new frontiers in attosecond science. Strong field phenomena in solids raise new challenges as the role of the band structure and the quantum nature of ultrafast electron-hole dynamics have yet to be resolved. Attosecond interferometry enabled us to obtaine a new insight into the origin of multiband strong-field currents. We probed the underlying attosecond dynamics that dictates the temporal evolution of carriers in large bandgap dielectrics via HHG spectroscopy and visualized the structure of multiple unpopulated high-energy conduction bands.