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arXiv · 0709.2101

Observation of the Purcell effect in high-index-contrast micropillar

A. J. Bennett·D. J. P. Ellis·A. J. Shields·P. Atkinson·I. Farrer·D. A. Ritchie
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Abstract

We have fabricated pillar microcavity samples with Bragg mirrors consisting of alternate layers of GaAs and Aluminium Oxide. Compared to the more widely studied GaAs/AlAs micropillars these mirrors can achieve higher reflectivities with fewer layer repeats and reduce the mode volume. We have studied a number of samples containing a low density of InGaAs/GaAs self assembled quantum dots in a cavity and here report observation of a three fold enhancement in the radiative lifetime of a quantum dot exciton state due to the Purcell effect.

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A. J. Bennett, D. J. P. Ellis, A. J. Shields, P. Atkinson, I. Farrer, D. A. Ritchie. 2007-09-13. Observation of the Purcell effect in high-index-contrast micropillar. https://doi.org/10.1063/1.2736292

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