Abstract
We considered the nonlinear dynamics of Bragg polaritons in a specially designed stratified semiconductor structure with embedded quantum wells, which possesses a convex dispersion. The model for the ensemble of single periodically arranged quantum wells coupled with the Bragg photon fields has been developed. In particular, the generalized Gross-Pitaevskii equation with the non-parabolic dispersion has been obtained for the Bragg polariton wave function. We revealed a number of dynamical regimes for polariton wave packets resulting from competition of the convex dispersion and the repulsive nonlinearity effects. Among the regimes are spreading, breathing and soliton propagation. When the control parameters including the exciton-photon detuning, the matter-field coupling and the nonlinearity are manipulated, the dynamical regimes switch between themselves.
Highlights
Our nowdays’ life is largely built on optoelectronic devices
We revealed three dynamical regimes for Bragg polariton wave packets that are spreading, breathing and soliton propagation
We have considered the nonlinear dynamics of the Bragg exciton-polaritons in the modified Bragg mirror with embedded periodically arranged quantum wells (QWs)
Summary
Our nowdays’ life is largely built on optoelectronic devices. The most of already existing devices operate separately with their optical and electronic parts. We believe that joining together the photonic and electronic parts will substantially change the face of modern optoelectronics, make new devices more efficient, targeted and successful. To answer this technological challenge, we resort to methods and approaches of Polaritonics, the interdisciplinary research area which is at the heart of modern optoelectronics and quantum light wave technologies. The strength of light-matter coupling in microcavities is limited by the number of QWs embedded in each cavity. To overcome this technological limitation, the concept of Bragg polaritons has been proposed [3,4].
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