A few-emitter solid-state multi-exciton laser.
Sci Rep
; 7(1): 7420, 2017 08 07.
Article
em En
| MEDLINE
| ID: mdl-28785008
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 ß-factor.
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MEDLINE
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En
Ano de publicação:
2017
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Article