Polariton lasing by exciton-electron scattering in semiconductor microcavities

Article

关键词: STIMULATED SCATTERING;    NONLINEAR EMISSION;    PHOTOLUMINESCENCE;    RELAXATION;    BOTTLENECK;    AMPLIFIER;    REGIME;   

DOI  :  10.1103/PhysRevB.65.153310

来源: SCIE

【 摘 要 】

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 electron-polariton 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.

【 授权许可】

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