Abstract Plasmonic nanoparticles provide an ideal environment for the enhancement of fluorescent emission. On one hand, they locally amplify electromagnetic fields, increasing emitter excitation rate, and on other a high local density states that accelerates spontaneous However, when is placed in close proximity to single metal nanoparticle, number nonradiative increases dramatically, causing f...

We studied the rate of spontaneous emission from colloidal CdSe and CdTe nanocrystals at room temperature. The decay rate, obtained from luminescence decay curves, increases with the emission frequency in a supralinear way. This dependence is explained by the thermal occupation of dark exciton states at room temperature, giving rise to a strong attenuation of the rate of emission. The supraline...

We formulated an analytical model and analyzed the modification of spontaneous emission in Bragg onion resonators. We consider both the case of a single light emitter and a uniformly distributed ensemble of light emitters within the resonator. We obtain an expression for the average radiation rate of the light emitters ensemble and discuss the modification of the average radiation rate as a fun...

This thesis describes a theoretical and experimental investigation of the intensities, linewidths, and frequencies of radiation by an atom in an optical resonator. It is found that the atom's spontaneous emission rate may be enhanced or inhibited, depending on the tuning of the resonator, and its transition frequencies shifted. A simple classical description of these effects is given in which t...

Abstract We show that a circularly polarized electric dipole harbors near-field concentrated wave which orbits around with an energy flux significantly larger (five orders of magnitudes at ∼1 nm radial distance) than far-field radiation. This is found to carry transverse spins and reveal skyrmion spin texture (Néel-type). By performing electromagnetic analysis numerical simulation, we demonstra...