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arXiv · 1003.2946

Temporal Monitoring of Non-resonant Feeding of Semiconductor Nanocavity Modes by Quantum Dot Multiexciton Transitions

A. Laucht·M. Kaniber·A. Mohtashami·N. Hauke·M. Bichler·J. J. Finley
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Abstract

We experimentally investigate the non-resonant feeding of photons into the optical mode of a zero dimensional nanocavity by quantum dot multiexciton transitions. Power dependent photoluminescence measurements reveal a super-linear power dependence of the mode emission, indicating that the emission stems from multiexcitons. By monitoring the temporal evolution of the photoluminescence spectrum, we observe a clear anticorrelation of the mode and single exciton emission; the mode emission quenches as the population in the system reduces towards the single exciton level whilst the intensity of the mode emission tracks the multi-exciton transitions. Our results lend strong support to a recently proposed mechanism mediating the strongly non-resonant feeding of photons into the cavity mode.

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A. Laucht, M. Kaniber, A. Mohtashami, N. Hauke, M. Bichler, J. J. Finley. 2010-03-15. Temporal Monitoring of Non-resonant Feeding of Semiconductor Nanocavity Modes by Quantum Dot Multiexciton Transitions. https://doi.org/10.1103/physrevb.81.241302

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