%0 Journal Article %T GaN microcavities and Bragg reflectors: giant exciton-light coupling %+ Groupe d'étude des semiconducteurs (GES) %A Kavokin, A. %A Gil, Bernard %< avec comité de lecture %Z GES:99-027 %@ 0921-5107 %J Materials Science and Engineering: B %I Elsevier %V 59 %P 261-263 %8 1999 %D 1999 %K nitrides %K microcavities %K excitons %K polaritons %K wurzite %K SEMICONDUCTOR MICROCAVITIES %K ABSORPTION %Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles %X Numerical simulation of light reflection from a lambda/2 GaN microcavity with Ga0.8Al0.2N/Ga0.5Al0.5N Bragg mirrors grown on the A-surface of Al2O3 revealed a Rabi-splitting of the order of 50 meV and remarkable optical anisotropy. In a separate Bragg mirror, the exciton interference results in a 95% modulation of reflection spectra. These effects originate from the giant exciton oscillator strength in GaN and a pronounced uniaxial strain in the structure. (C) 1999 Elsevier Science S.A. All rights reserved. %G English %L hal-00546560 %U https://hal.science/hal-00546560 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2 %~ TEST3-HALCNRS