High Q modes in elliptical microcavity pillars

D. M. Whittaker*, P. S.S. Guimaraes, D. Sanvitto, H. Vinck, S. Lam, A. Daraei, J. A. Timpson, A. M. Fox, M. S. Skolnick, Y. L.D. Ho, J. G. Rarity, M. Hopkinson, A. Tahraoui

*Corresponding author for this work

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Abstract

The degenerate fundamental mode of a microcavity pillar structure with circular cross section splits into two linearly polarized modes when the shape is changed to elliptical. The quality factor Q of these modes is very different. This letter demonstrates that the high Q mode provides better values of the figure of merit for strong coupling applications, Q/√V), where V is the modal volume, compared to values obtainable in circular structures. The difference in Q is shown to be a consequence of the polarization dependence of the losses through the microcavity mirrors.

Original languageEnglish
Article number161105
JournalApplied Physics Letters
Volume90
Issue number16
DOIs
Publication statusPublished - 2007
Externally publishedYes

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