Regensburg 2013 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 63: Plasmonics and Nanooptics V

O 63.7: Vortrag

Donnerstag, 14. März 2013, 12:00–12:15, H38

Tailoring the emission of electric and magnetic dipoles with plasmonic split-ring resonators — •Sven Moritz Hein and Harald Giessen — 4th Physics Institute and Research Center SCoPE, University of Stuttgart, D-70569 Stuttgart, Germany

The radiative properties of photon emitters strongly depend on their photonic environment, i.e., on the local density of states (LDOS). Due to the high electric and magnetic fields around a resonantly excited plasmonic nanostructure, the LDOS is strongly modified. This can enhance as well as suppress both radiative and non-radiative decay rates, dependent on the location and frequency of the emitter. Using a discrete dipole approximation (DDA) algorithm, we explore the emission behavior of electric as well as magnetic dipole emitters located next to resonant split ring resonators, which are well-known for their large magnetic moment at their fundamental resonance. We also show to what extend the widely used two-dipole model of an SRR is able to explain the resulting Fano-type features in the emission spectra.