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O: Fachverband Oberflächenphysik

O 61: Plasmonics and Nanooptics 2

O 61.4: Talk

Thursday, September 8, 2022, 11:30–11:45, H2

Modelling Plasmon-Exciton Interaction using a Coupled-Oscillator Approach — •Simon Durst, Christoph Schnupfhagn, and Markus Lippitz — Experimental Physics III, University of Bayreuth

Coupling effects between plasmonic and excitonic systems have attracted increasing interest in the last decade. In particular, Surface Lattice Resonances, diffractive modes supported by periodic arrays of metallic nanoparticles, allow for long-range coherent energy transfer and have been shown to strongly couple to interspersed excitonic emitters. Here, we will present experimental results showing strong coupling between Surface Lattice Resonances and the excitonic mode of a J-aggregate dye. The angle-resolved extinction spectra of this coupled system are modelled using a coupled oscillator model, which describes observed effects, such as a loss of contrast of the upper polariton branch or an asymptotic behaviour of the lower polariton branch well.