Berlin 2008 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 53: Optical properties

HL 53.13: Vortrag

Freitag, 29. Februar 2008, 13:45–14:00, EW 201

Theory of surface plasmon polariton - exciton interaction — •Stephan Schwieger¹, Parinda Vasa^1,2, and Erich Runge¹ — ¹Technische Universität Ilmenau, Institut für Physik, 98693 Ilmenau — ²Institut für Physik, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg

A detailed understanding of the coupling of surface plasmon polaritons (SPPs) and excitons allows to control basic SPP properties, e.g., their life time and dispersion relation, by the design of special metal-semiconductor hybrid structures. We present a theory of SPP-exciton coupling. The SPP dispersion relation, the electromagnetic field distribution, and the far field reflectivity are calculated and discussed for an hybrid system that consists of an array of metal wires on top of a GaAs/AlGaAs quantum well. Clear indications for strong SPP-exciton interaction are found.