%0 Journal Article %T Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature %+ Groupe d'étude des semiconducteurs (GES) %+ Laboratoire des sciences et matériaux pour l'électronique et d'automatique (LASMEA) %+ Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA) %+ Laboratoire de photonique et de nanostructures (LPN) %A Faure, Stéphane %A Brimont, Christelle %A Guillet, Thierry %A Bretagnon, T. %A Gil, B. %A Médard, François %A Lagarde, David %A Disseix, Pierre %A Leymarie, Joël %A Zúñiga-Pérez, Jesús %A Leroux, Mathieu %A Frayssinet, Eric %A Moreno, Jean-Christophe %A Semond, Fabrice %A Bouchoule, Sophie %< avec comité de lecture %@ 0003-6951 %J Applied Physics Letters %I American Institute of Physics %V 95 %N 12 %P 121102 %8 2009-09-21 %D 2009 %Z 0905.4351 %R 10.1063/1.3232228 %K oxide %K microcavity %K strong coupling %Z PACS: 71.35.-y, 71.36.+c, 78.20.-e ; 78.55.Et %Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles %X 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. %G English %2 https://hal.science/hal-00388499v2/document %2 https://hal.science/hal-00388499v2/file/Article_Faure_2009-arxiv-v1.pdf %L hal-00388499 %U https://hal.science/hal-00388499 %~ UNICE %~ PRES_CLERMONT %~ CNRS %~ UNIV-BPCLERMONT %~ UNIV-MONTP2 %~ GES %~ ACL-SF %~ UNIV-MONTPELLIER %~ UNIV-COTEDAZUR %~ ANR %~ CRHEA %~ UM1-UM2