Nonlinear relaxation of zero-dimension-trapped microcavity polaritons Auteur(s): El daif Ounsi, Nardin Gaël, Paraïso Taofiq, Baas Augustin, Richard Maxime, Brantut Jean-philippe, Guillet T., Morier-genoud François, Deveaud-plédran Benoit (Article) Publié: Applied Physics Letters, vol. 92 p.081910 (2008) Texte intégral en Openaccess : Ref HAL: hal-00805877_v1 DOI: 10.1063/1.2885018 WoS: 000254297300031 Exporter : BibTex | endNote 7 Citations Résumé: 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. |