Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature - Archive ouverte HAL Access content directly
Journal Articles Applied Physics Letters Year : 2009

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

Stéphane Faure
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Christelle Brimont
Thierry Guillet
B. Gil

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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Dates and versions

hal-00388499 , version 1 (27-05-2009)
hal-00388499 , version 2 (25-09-2009)

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Stéphane Faure, Christelle Brimont, Thierry Guillet, T. Bretagnon, B. Gil, et al.. Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature. Applied Physics Letters, 2009, 95 (12), pp.121102. ⟨10.1063/1.3232228⟩. ⟨hal-00388499v2⟩
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