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Large room temperature Rabi-splitting in IIVI semiconductor microcavity quantum structures
 

Summary: Large room temperature Rabi-splitting in II­VI semiconductor
microcavity quantum structures
A. Pawlis*, A. Khartchenko, O. Husberg, D.J. As, K. Lischka, D. Schikora
Department of Physics, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany
Abstract
Due to their large oscillator strength, ZnSe microcavities with (Zn,Cd)Se quantum wells are particularly suited to investigate the photon­
exciton coupling behaviour in semiconductors. We have observed a strong coupling between the excitonic and photonic mode in a ZnSe
microcavity with four (Zn,Cd)Se quantum wells and distributed Bragg-mirrors of ZnS and YF3. A very large Rabi-splitting V . 40 meV was
observed at T ¼ 300 K in reflection measurements as well as in photoluminescence investigations.
q 2003 Elsevier Science Ltd. All rights reserved.
Keywords: Rabi-splitting; Microcavity structure; Bragg-mirrors
1. Introduction
Semiconductor quantum wells as part of microcavities
allow to study the interconversion between excitons and
photons, which in the strong coupling regime is manifested
as a Rabi-splitting into two resonance features of the optical
spectrum.
The coupling between excitons and photons generate
quasi-particles known as polaritons. These particles have
some extraordinary properties which open the possibility to

  

Source: As, Donat Josef - Department Physik, Universität Paderborn

 

Collections: Materials Science; Physics