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

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

2007-09-13

arxiv.org/abs/0709.2101v1

Appl. Phys. Lett. 90, 191911 (2007)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1063/1.2736292

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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