Nonlinear dynamics of nonequilibrium exciton-polaritons in a periodic potential

3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures (Saint Petersburg OPEN 2016)

Charukhchyan, M.V.^1 ; Chestnov, I. Yu^1 ; Alodjants, A.P.^1,2 ; Ma, X.^3 ; Egorov, O.A.^3

Department of Physics and Applied Mathematics, Vladimir State University Named after A. G. and N. G. Stoletovs, 87 Gorkii St., Vladimir

600000, Russia^1

National Research University of Information Technology, Mechanics and Optics (ITMO), Saint Petersburg

197101, Russia^2

Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, Jena

07743, Germany^3

关键词: Analytical relations;    Analytical results;    Exciton polaritons;    Exciton-polariton;    External potential;    Periodic potentials;    Semiconductor microcavities;    Strong-coupling regime;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/741/1/012117/pdf
DOI  :  10.1088/1742-6596/741/1/012117

来源: IOP

【 摘 要 】

An exciton-polariton condensate formed in a semiconductor microcavity coupled to an exciton reservoir in the strong coupling regime is studied. The condensate is trapped in onedimensional periodic potential, and we work in the centre of Brillouin zone. We develop a model for coupled three spatial harmonics of mean field. Using the simplified model we get important analytical relations for polaritonic eigenstates and band-structure. The analytical results are supported by numerical analysis. The strong influence of external potential and nonlinearity is discussed and the feedback induced by the inhomogeneity of the incoherent reservoir on the dynamics of coherent polaritons.