SKM 2023 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 80: Plasmonics and Nanooptics IV: Light-Matter Interaction and Spectroscopy III

O 80.8: Vortrag

Donnerstag, 30. März 2023, 17:00–17:15, CHE 89

Microscopic description of the optical response in metal nanoparticles — •Jonas Grumm, Robert Salzwedel, Malte Selig, and Andreas Knorr — Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Berlin, Germany

The optical response of metal nanoparticles is dominated by the formation of collective electronic resonances, so-called localized plasmons.

Here, we present a microscopic approach to their temporal dynamics based on the self-consistent treatment of the microscopic Boltzmann transport equations and the macroscopic Maxwell's equations for the electromagnetic fields. The corresponding numerical simulations describe the formation, propagation and thermalization dynamics of plasmons via the coupled electron-phonon dynamics in the self-consisting solved optical field. The formalism allows nonlinear optical processes to be included in the description.