Butte, R.Christmann, G.Feltin, E.Carlin, J. F.Mosca, M.Ilegems, M.Grandjean, N.2010-10-052010-10-052010-10-05200610.1103/PhysRevB.73.033315https://infoscience.epfl.ch/handle/20.500.14299/55035WOS:000235009500028We report strong exciton-photon coupling at room temperature in a hybrid high quality bulk 3 lambda/2 GaN cavity with a bottom lattice-matched AlInN/AlGaN distributed Bragg reflector through angle-resolved polarized photoluminescence (PL). Coupling of the optically active free excitons (X-A, X-B, and X-C) to the cavity mode is demonstrated, with their contribution to the PL spectra varying with polarization. Under TE polarization, exciton oscillator strengths for X-A and X-B are about one order of magnitude larger than in bulk GaAs. Photoluminescence exhibits a strong bottleneck effect despite its thermal lineshape.SEMICONDUCTOR MICROCAVITIESQUANTUM MICROCAVITYLASERStext::journal::journal article::research article