%0 Journal Article %T Nonlinear relaxation of zero-dimension-trapped microcavity polaritons %+ Institute of Condensed Matter Physics [Lausanne] %+ Groupe d'étude des semiconducteurs (GES) %A El Daif, Ounsi %A Nardin, Gaël %A Paraïso, Taofiq %A Baas, Augustin %A Richard, Maxime %A Brantut, Jean-Philippe %A Guillet, Thierry %A Morier-Genoud, François %A Deveaud-Plédran, Benoit %< avec comité de lecture %Z L2C:08-023 %@ 0003-6951 %J Applied Physics Letters %I American Institute of Physics %V 92 %P 081910 %8 2008-02-28 %D 2008 %Z 0905.3186 %R 10.1063/1.2885018 %Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Journal articles %X We study the emission properties of confined polariton states in shallow zero-dimensional traps under non resonant excitation. We evidence several relaxation regimes. For slightly negative photon-exciton detuning, we observe a nonlinear increase of the emission intensity, characteristic of carrier-carrier scattering assisted relaxation under strong-coupling regime. This demonstrates the efficient relaxation toward a confined state of the system. For slightly positive detuning, we observe the transition from strong to weak coupling regime and then to single-mode lasing. %G English %L hal-00805877 %U https://hal.science/hal-00805877 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2