Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 49: Poster – Photonics, Lasers, and Applications
Q 49.43: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Investigation of the valence electronic structure and dynamics of nanostructured materials via high-order harmonic generation — Agata Azzolin2,5, •Noah Tettenborn1,5, Sani Harouna-Mayer3, Oliviero Cannelli2,5, Yogesh Mahor3, Francesco Caddeo3, Andrea Trabattoni2,4,5, Terry Mullins2,5, Vincent Wanie2,5, Dorota Koziej3, and Francesca Calegari1,2,5 — 1University of Hamburg — 2Desy, Hamburg — 3Institute for Nanostructure and Solid State Physics, University of Hamburg — 4Leibniz University Hannover — 5Center for Free-Electron Laser Science, Hamburg
In previous works, HHG has been shown to be a suitable tool for characterizing valence potentials in bulk systems [1]. Here, we aim to establish this technique as a complementary, all-optical, in-situ tool to characterize nanoengineered transition metal oxides, mapping their response across different ordering scales.
Preliminary experimental data exploring excitations at different wavelengths, intensities, and polarizations will be presented for different ordered systems. The results are supported by simulations done in the framework of TDDFT for different crystal structures, incident intensities, wavelengths, and polarizations. These are used to predict the reconstructive capabilities at different configurations.
[1] Lakhotia et al., Nature, 2020, https://doi.org/10.1038/s41586-020-2429-z
Keywords: High Harmonic Generation in Solids; Nanostructures; Valence Band Reconsruction