TITLE

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

AUTHOR(S)
Faure, S.; Brimont, C.; Guillet, T.; Bretagnon, T.; Gil, B.; Médard, F.; Lagarde, D.; Disseix, P.; Leymarie, J.; Zúñiga-Pérez, J.; Leroux, M.; Frayssinet, E.; Moreno, J. C.; Semond, F.; Bouchoule, S.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p121102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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, showing a nonthermal polariton distribution. 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.
ACCESSION #
44374803

 

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