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Updated: Jun 2, 2026

Fabrication of Silica Ultra High Quality Factor Microresonators
Published on: July 2, 2012
Quality-factor enhancement of supermodes in coupled microdisks
M Benyoucef1, J-B Shim, J Wiersig
1Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany. m.benyoucef@physik.uni‐kassel.de
Abstract:
We investigate the optical modes in a coupled pair of semiconductor microdisks in symmetric and asymmetric configurations both experimentally and theoretically. While the quality factors of coupled first- and second-order whispering gallery modes (WGMs) show a conventional crossing, the quality factors of the same-order WGMs reveal an interesting splitting behavior, leading to the formation of high- and low-quality supermodes. Our results are reproduced by numerical simulations, and an explanation based on optical interference is suggested. Quality-factor splitting is a subtle phenomenon that might help to design microarchitectures for efficient optical coupling in cavity quantum electrodynamic experiments.
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