2005•Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physicsRequires access
Striking dynamics of II–VI microcavity polaritons after linearly polarized excitation
María Dolores Martín, Dario Ballarini, Alberto Amo, Ł. Kłopotowsi, L. Viña, Alexey Vitalievich Kavokin, R. André
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Abstract
We present a detailed study of the polariton spin dynamics in a II–VI microcavity after linearly polarized excitation. We have found that the vertically polarized (i.e. TE) emission is systematically larger than the horizontally polarized one (i.e. TM) for both, vertically and horizontally polarized excitation. Furthermore, a persistent difference between the two components of the emission is observed, leading to a net and constant (within the duration of the emission) linear polarization degree. Additionally, we have observed marked oscillations of the linear polarization degree once the excitation power is raised above the polariton-polariton stimulated scattering threshold. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)