Quality-factor enhancement of supermodes in coupled microdisks

Benyoucef, M.; Shim, J. B.; Wiersig, J.; Schmidt, O. G.

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Quality-factor enhancement of supermodes in coupled microdisks

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Benyoucef, M.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Schmidt, O. G.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Nanostructuring Lab (Jürgen Weis), Max Planck Institute for Solid State Research, Max Planck Society;
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Benyoucef, M., Shim, J. B., Wiersig, J., & Schmidt, O. G. (2011). Quality-factor enhancement of supermodes in coupled microdisks. Optics Letters, 36(8), 1317-1319.

Cite as: https://hdl.handle.net/21.11116/0000-000E-BDED-3

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. (c) 2011 Optical Society of America