Formation of plasmon pulses in the cooperative decay of excitons of quantum dots near a metal surface

Abstract

The formation of pulses of surface electromagnetic waves in a metal/dielectric interface is considered in the process of cooperative decay of excitons of quantum dots distributed near a metal surface in a dielectric layer. It is shown that the efficiency of exciton energy transfer to excited plasmons can be increased by selecting the dielectric material with specified values of the complex permittivity. It is found that in the mean field approximation the semiclassical model of formation of plasmon pulses in the system under study is reduced to the pendulum equation with the additional term of nonlinear losses.

Cooperative spontaneous decay of local excitation in a dense and disordered ensemble of point-like impurity atoms near a charged conductive surface

“…Single metallic surface also has this property. For this reason, the characteristics of the ensemble of atoms or quantum dots located near the conductive surface differ from ones in the case of the same ensemble in free space [12]. If the metallic surface is charged, an electrostatic field causes Stark shifts of the atomic energy levels, which leads to additional modification of the interatomic dipole-dipole interaction [13] - [14].…”

Entangled plasmon generation in nonlinear spaser system under the action of external magnetic field

“…If the Rabi frequency of interaction (for example, a dipole-dipole interaction) between nanoobjects becomes greater than the characteristic times of decay, then a strong coupling arises in the system [10]. A realistic model of the spaser can be based on a compound nanoobject consisting of a metal core and a semiconductor shell [11] or on a distributed system of nanoparticles with complex geometry [12][13][14][15][16]. Currently, both localized subwavelength [4] and waveguide [17] spaser-like systems are implemented.…”

Formation of Surface Plasmon-Polariton Vortices at Reflection from Curvilinear Boundary

“…In the last decade surface plasmon polaritons (SPPs) attract attention of researchers in connection with controlling of the electromagnetic fields of optical frequencies by the SPP-devices and creating logic gates for optical processors, spasers, other devices and elements of plasmon technology [1][2][3][4][5][6][7][8][9][10]. The SPPs with the dependence of field components in the form ∼ exp [− + ( − )] can be excited on the interface of metal with a negative real part of the permittivity < 0, and a dielectric medium with the permittivity 0 > 0.…”