Oscillatory variations in the Q factors of high quality micropillar cavities

S. Reitzenstein*, N. Gregersen, C. Kistner, M. Strauss, C. Schneider, L. Pan, T. R. Nielsen, Sven Höfling, J. Mork, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

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 mu 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
Article number061108
Number of pages3
JournalApplied Physics Letters
Volume94
Issue number6
DOIs
Publication statusPublished - 9 Feb 2009

Keywords

  • Bragg gratings
  • microcavities
  • micromirrors
  • optical planar waveguides
  • PILLAR MICROCAVITIES

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