Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 63: Poster: Quantum Dots and Optics
HL 63.8: Poster
Mittwoch, 22. März 2017, 15:00–19:00, P1A
Exciton-light binding and lifetime of polaritons — •Hannes Lagemann1 and Klaus Morawetz2,3,4 — 1University of Münster, — 2Münster University of Applied Sciences, Stegerwaldstrasse 39, 48565 Steinfurt, Germany — 3International Institute of Physics (IIP) Av. Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil — 4Max-Planck-Institute for the Physics of Complex Systems, 01187 Dresden, Germany
Polaritons are investigated as quasiparticles formed when light and matter are strongly interacting. The exciton-photon interaction is modeled with the help of a separable potential. The dipole matrix element and the dipole transition rates are calculated and various lifetimes are discussed. Two modes are found whose lifetimes differ quantitatively and qualitatively as a function of the photon frequency. The regime where the exciton decays faster respectively slower than the polariton is determined.