Quantitative analysis of oscillatory variations in the quality factor of micropillar cavities

Niels Gregersen, Torben Roland Nielsen, Jesper Mørk

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The influence of the pillar radius on the Q factor of a micropillar cavity is investigated numerically. The relation between Q factor and pillar radius shows an advanced oscillatory behavior which cannot be explained in a 1D model.We propose a multi-mode Fabry-Perot model to quantify the oscillation period observed and we show that the governing mechanism behand the oscillation is coupling to higher-order propagating Bloch modes in the distributed Bragg reflectors. We demonstrate that even though the Q factor is an advanced function involving many oscillating contributions, the model still allows for the determination of a characteristic oscillation period.
Original languageEnglish
Title of host publicationConference proceedings, TaCoNa-Photonics
PublisherAmerican Institute of Physics
Publication date2009
Pages115-117
Publication statusPublished - 2009
Event2nd International workshop on theoretical and computational nanophotonics - Bad Honnef, Germany
Duration: 3 Dec 20095 Dec 2009
Conference number: 2

Workshop

Workshop2nd International workshop on theoretical and computational nanophotonics
Number2
Country/TerritoryGermany
CityBad Honnef
Period03/12/200905/12/2009

Keywords

  • Q factor
  • Micropillar
  • Bloch modes
  • resonator
  • optical microcavity

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