Regensburg 2022 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 59: Poster Wednesday: Plasmonics and Nanooptics 2

O 59.1: Poster

Mittwoch, 7. September 2022, 18:00–20:00, P4

Quantum 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 plasmons.

Here, we present a microscopic approach for their temporal dynamics based on the self-consistent treatment of microscopic Boltzmann transport equations and macroscopic Maxwell equations for the electromagnetic fields. Numerical simulations describe the thermalization of the phonons and the relaxation of the electrons upon optical excitation and allow to include nonlinear optical processes in the description.