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Photonics 2015, 2(2), 568-593; doi:10.3390/photonics2020568

Circuit Model of Plasmon-Enhanced Fluorescence

1
Aalto University, School of Electrical Engineering, Aalto FI-76000, Finland
2
ITMO University, St. Petersburg 197101, Russia 
Received: 14 April 2015 / Accepted: 13 May 2015 / Published: 22 May 2015
(This article belongs to the Special Issue New Frontiers in Plasmonics and Metamaterials)
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Abstract

Hybridized decaying oscillations in a nanosystem of two coupled elements—a quantum emitter and a plasmonic nanoantenna—are considered as a classical effect. The circuit model of the nanosystem extends beyond the assumption of inductive or elastic coupling and implies the near-field dipole-dipole interaction. Its results fit those of the previously developed classical model of Rabi splitting, however going much farther. Using this model, we show that the hybridized oscillations depending on the relationships between design parameters of the nanosystem correspond to several characteristic regimes of spontaneous emission. These regimes were previously revealed in the literature and explained involving semiclassical theory. Our original classical model is much simpler: it results in a closed-form solution for the emission spectra. It allows fast prediction of the regime for different distances and locations of the emitter with respect to the nanoantenna (of a given geometry) if the dipole moment of the emitter optical transition and its field coupling constant are known. View Full-Text
Keywords: quantum emitter; localized surface plasmon; electromagnetic coupling; fluorescence; Purcell factor; Rabi oscillations quantum emitter; localized surface plasmon; electromagnetic coupling; fluorescence; Purcell factor; Rabi oscillations
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Simovski, C. Circuit Model of Plasmon-Enhanced Fluorescence. Photonics 2015, 2, 568-593.

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