Coupling of a dipolar emitter into one-dimensional surface plasmon

Dipolar emitters at nanoscale proximity of metal surfaces: Giant enhancement of relaxation in microscopic theory

We consider a nanoscale dipolar emitter ~quantum dot, atom, fluorescent molecule, or rare-earth ion! in a nanometer proximity to a flat metal surface. There is strong interaction of this emitter with unscreened metal electrons in the surface nanolayer that causes enhanced relaxation due to surface plasmon excitation and Landau damping. To describe these phenomena, we developed analytical theory...

Single emitters coupled to plasmonic nano- antennas: angular emission and collection efficiency

We study the angular emission of a single emitter near a metallic nanoparticle by experiments and numerical calculations. In the experiments, a single fluorescent molecule is controllably scanned near an optical monopole antenna. Large changes in the angular emission of the molecule occur due to the coupling to the particle. Both the polarization and intensity of the angular emission show a dis...

Purcell factor for a point-like dipolar emitter coupled to a two-dimensional plasmonic waveguide

Plasmon-Exciton Coupling in Symmetry-Broken Nanocavities

We investigate the onset of strong coupling in the temporal dynamics of the exciton population at a single emitter interacting with symmetry-broken plasmonic nanocavities. These structures consist in pairs of metallodielectric elements separated by a nanometric gap, with different degrees of asymmetry imposed on their geometric or material characteristics. In order to describe the emergence of ...

Adjustable Plasmonic Bandgap in One-Dimensional Nanograting Based on Localized and Propagating Surface Plasmons

Compared to the long history of plasmonic gratings, there are only a few studies regarding the bandgap in the propagation of plasmonic surface waves. Considering the previous studies on interpretation of plasmonic bandgap formation, we discuss this phenomenon using the effect of both surface plasmon polariton (SPP) and localized surface plasmon (LSP) for our fabricated one-dimensional metallic-...