Malpuech, G, Kavokin, A, Di Carlo, A and Baumberg, J.J.
Polariton lasing by exciton-electron scattering in semiconductor microcavities.
PHYSICAL REVIEW B,, 65, (153310), .
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The relaxation bottleneck present in the dispersion relation of exciton polaritons in semiconductor microcavities has prevented the realization of low threshold lasing based on exciton-polariton condensation. Here we show theoretically that the introduction of a cold electron gas into such structures induces efficient electronpolariton scattering. This process allows the condensation of the polaritons accumulated at the bottleneck to the final emitting state with a transition time of a few picoseconds, opening the way to a new generation of low-threshold light-emitting devices.
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