Levrat, J.Butte, R.Christian, T.Glauser, M.Feltin, E.Carlin, J. F.Grandjean, N.Read, D.Kavokin, A. V.Rubo, Y. G.2010-10-052010-10-052010-10-05201010.1103/PhysRevLett.104.166402https://infoscience.epfl.ch/handle/20.500.14299/55093WOS:000277007700042A room temperature polariton condensate realized in a microcavity with embedded GaN quantum wells emits linearly polarized light at threshold with the plane of polarization pinned to one of the crystallographic axes. With increasing pumping power, a depinning of the polarization is observed resulting in a progressive decrease of the polarization degree of the emitted light. This depinning is understood in terms of polariton-polariton repulsion competing with the static disorder potential effect. The polarization behavior differs from that of conventional lasers where the polarization degree usually increases as a function of pumping power.BOSE-EINSTEIN CONDENSATIONSEMICONDUCTOR MICROCAVITIESBOTTLENECKRELAXATIONVORTICEStext::journal::journal article::research article