META 2021, META'12

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Classical analog of electromagnetically induced absorption in plasmonics
Richard Taubert, Mario Hentschel, Jürgen Kästel, Harald Giessen

Last modified: 2012-01-03

Abstract


The ability to manipulate the phase shift between two coupled plasmonic resonances in a controlled fashion has been unavailable up to now. Here we present a strategy to overcome this limitation by employing the benefits of near-field coupling on the one hand and retardation effects due to far-field coupling on the other hand. We theoretically and experimentally demonstrate that in the intermediate regime the coupling of a broad dipolar to a narrow dark quadrupolar plasmon resonance is possible while simultaneously allowing for a retardation-induced phase shift. This leads to constructive interference and enhanced absorption. The observed phenomena can thus be termed classical analog of electromagnetically induced absorption.

Keywords


plasmonics, nanophotonics, EIT, EIA