Control of the surface plasmon dispersion and Purcell effect at the metamaterial-dielectric interface

Abstract

The use of metamaterial as a way to mitigate the negative effects of absorption in metals on the Purcell effect in metal-dielectric structures is investigated. A layered metal-dielectric structure is considered as an anisotropic medium in the long-wavelength limit. The dispersion of the surface plasmon appearing at the boundary between such a structure and a different dielectric material, as well as the position of the peak in the local density of states are studied for various combinations of materials and filling factors of the periodic structure. The calculated frequency dependence of the Purcell factor demonstrates an increase in peak value compared to the conventional plasmonic structure. The results obtained using effective media approach are compared to the results of numerical modelling.

Effect of the effective refractive index on the radiative decay rate in nanoparticle thin films

“…24 For this reason, FDTD simulations combined with dipole sources are typically used to calculate the enhancement of Γ rad associated with the presence of complex photonic structures. 25–27 Specifically, simulating the radiated power from an electric dipole antenna allows the calculation of Γ rad as: 1 where d is the dipole moment of the antenna and 〈 P 〉 is the mean power radiated by the dipole. In the case of randomly oriented emitters, three orthogonal orientations of the dipole antenna should be calculated and averaged.…”

“…24 For this reason, FDTD simulations combined with dipole sources are typically used to calculate the enhancement of Γ rad associated with the presence of complex photonic structures. [25][26][27] Specifically, simulating the radiated power from an electric dipole antenna allows the calculation of Γ rad as: 1…”

Quantum Interference in Spontaneous Decay of a Quantum Emitter Placed in a Dimer of Bismuth-Chalcogenide Microparticles

“…In cavity QED, the light-matter interactions depend on characteristic features of the nanostructure, such as the material composition, size and geometry as well as on the radiation field. Examples of photonic micro-and nanostructures that modify spontaneous decay include microwave and optical cavities, photonic crystals [5], refractive index metamaterials [6], semiconductor microcavities, two-dimensional structured reservoirs [7] and plasmonic nanostructures [8][9][10][11][12][13][14][15].…”