Spontaneous non-ground state polariton condensation in pillar microcavities
arXiv:0907.3424 · doi:10.1103/PhysRevB.81.081307
Abstract
We observe spontaneously driven non-ground state polariton condensation in GaAs pillar microcavities under non-resonant optical excitation. We identify a regime where the interplay of exciton-exciton and pair polariton scattering can lead to mode switching from non-ground state to ground state polariton condensation. A simple kinematic model satisfactorily describes the observed mode switching as each of the above scattering mechanisms becomes prevalent at different carrier densities.
4 pages, 3 figures
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