Oscillatory variations in the Q factors of high quality micropillar cavities

S. Reitzenstein, Niels Gregersen, C. Kistner, M. Strauss, C. Schneider, L. Pan, Torben Roland Nielsen, S. Höfling, Jesper Mørk, A. Forchel

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Abstract

We report on the observation of oscillatory variations in the quality Q factor of quantum dot-micropillar cavities based on planar Bragg reflectors. The oscillatory behavior in the Q versus diameter dependence appears in the diameter range between 1.0 and 4.0 m, has a characteristic period of a few hundred nanometers and increases in amplitude with increasing reflectivity of the planar microcavity structures. The experimental results are well reproduced by numerical calculations which support the interpretation that the Q oscillations are caused by coupling of propagating Bloch modes of different orders at the mirror interfaces.
Original languageEnglish
JournalApplied Physics Letters
Volume94
Issue number6
Pages (from-to)061108
ISSN0003-6951
DOIs
Publication statusPublished - 2009

Bibliographical note

Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • PILLAR MICROCAVITIES

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