DOI

Optically generated exciton-polaritons in cylindric semiconductor pillar microcavity with embedded GaAs/AlGaAs quantum wells demonstrate a clear polariton lasing regime. When exciting in the center of the pillar, we detect a ring-shaped emission, where the peak of intensity can be separated from the excitation spot by more than 10 lm. The spatial coherence of the ring emission is verified by interferometry measurements. These observations are interpreted by drift of the exciton polariton condensate away from the excitation spot due to its repulsion from the exciton reservoir and by its spatial confinement by the pillar boundary.
Язык оригиналаанглийский
Страницы (с-по)094304_1-4
ЖурналJournal of Applied Physics
Том115
Номер выпуска9
DOI
СостояниеОпубликовано - 2014

ID: 7005738