Ultrafast Science Seminar - Caterina Vozzi: Attosecond probing of electron correlation in xenon by two-color driven high-order harmonic generation
Oplysninger om arrangementet
Speaker: Caterina Vozzi, Department of Physics, Politecnico Milano, Italy
Title: Attosecond probing of electron correlation in xenon by two-color driven high-order harmonic generatio
High-order harmonic generation (HHG) is a sensitive probe of atomic and molecular structures. Recently this research field greatly benefited from the exploitation of mid-IR driving pulses that allowed the extension of the harmonic emission to higher photon energies, giving access to several phenomena previously unexplored with this technique, such as the giant resonance in xenon. This enhancement in the harmonic generation yield around 100 eV has been interpreted in terms of the electronic structure of xenon, suggesting the key role of single and multi-electron contributions to the harmonic generation process. In our work, we exploited HHG by a two-color field, combining this powerful experimental approach with a mid-IR driving source, providing the evidence of a deviation of the xenon response with respect to the expected atomic behavior which is interpreted as the fingerprint of electron correlation effects.
Coffee/tea and cake at 15:00