Relaxation and emission of Bragg-mode and cavity-mode polaritons in a ZnO microcavity at room temperature Auteur(s): Faure Stephane, Brimont C., Guillet T., Bretagnon T., Gil B., Médard François, Lagarde D., Disseix Pierre, Leymarie Joel, Zúñiga-Pérez Jesús, Leroux Mathieu, Frayssinet Eric, Moreno Jean-Christophe, Semond Fabrice, Bouchoule Sophie (Article) Publié: Applied Physics Letters, vol. 95 p.121102 (2009) Texte intégral en Openaccess : Ref HAL: hal-00388499_v2 Ref Arxiv: 0905.4351 DOI: 10.1063/1.3232228 WoS: 000270243800002 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 33 Citations Résumé: 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. |