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A few-emitter solid-state multi-exciton laser.

ABSTRACT: We report on non-conventional lasing in a photonic-crystal nanocavity that operates with only four solid-state quantum-dot emitters. In a comparison between microscopic theory and experiment, we demonstrate that irrespective of emitter detuning, lasing with [Formula: see text] is facilitated by means of emission from dense-lying multi-exciton states. In the spontaneous-emission regime we find signatures for radiative coupling between the quantum dots. The realization of different multi-exciton states at different excitation powers and the presence of electronic inter-emitter correlations are reflected in a pump-rate dependence of the ?-factor.

SUBMITTER: Lichtmannecker S

PROVIDER: S-EPMC5547160 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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A few-emitter solid-state multi-exciton laser.

Lichtmannecker S S Florian M M Reichert T T Blauth M M Bichler M M Jahnke F F Finley J J JJ Gies C C Kaniber M M

Scientific reports 20170807 1

We report on non-conventional lasing in a photonic-crystal nanocavity that operates with only four solid-state quantum-dot emitters. In a comparison between microscopic theory and experiment, we demonstrate that irrespective of emitter detuning, lasing with [Formula: see text] is facilitated by means of emission from dense-lying multi-exciton states. In the spontaneous-emission regime we find signatures for radiative coupling between the quantum dots. The realization of different multi-exciton s ...[more]

PMID: 28785008

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