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arXiv · 0905.4351

Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature

Stéphane Faure·Christelle Brimont·Thierry Guillet·T. Bretagnon·B. Gil·François Médard·D. Lagarde·Pierre Disseix·Joel Leymarie·Jesús Zúñiga-Pérez·Mathieu Leroux·Eric Frayssinet·Jean-Christophe Moreno·Fabrice Semond·Sophie Bouchoule
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Abstract

The strong coupling regime in a ZnO microcavity is investigated through room temperature photoluminescence and reflectivity experiments. The simultaneous strong coupling of excitons to the cavity mode and the first Bragg mode is demonstrated at room temperature. The polariton relaxation is followed as a function of the excitation density. A relaxation bottleneck is evidenced in the Bragg-mode polariton branch. It is partly broken under strong excitation density, so that the emission from this branch dominates the one from cavity-mode polaritons.

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Stéphane Faure, Christelle Brimont, Thierry Guillet, T. Bretagnon, B. Gil, François Médard, D. Lagarde, Pierre Disseix, Joel Leymarie, Jesús Zúñiga-Pérez, Mathieu Leroux, Eric Frayssinet, Jean-Christophe Moreno, Fabrice Semond, Sophie Bouchoule. 2009-09-25. Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature. https://doi.org/10.1063/1.3232228

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