META 2021, META'12

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Spontaneous emission of plasmonic ring metamaetrial
Tatiana Teperik, Aloyse Degiron

Last modified: 2012-01-06


Combining two concepts, metamaterials and nanoantennas, we present a theoretical study on the spontaneous emission (SE) of a plasmonic metamaterial (MM) composed of a square lattice of ring nanoantennas fed by dipole emitters. We show that the emission spectrum of such a MM exhibits two types of anomalies that leads to a strong SE enhancement. One type of anomaly is caused by the excitation of plasmons localized on the metallic rings and another type is the diffractive anomaly (Rayleigh's anomalies) associated with the opening of new diffraction orders into surrounding media. We predict a resonant Fano profile in the spectral overlapping of localized (discrete) particle resonance with the continuum of propagating diffractive anomalies.


metamaterials, nanoantennas