Anomalous blue-shift of terahertz whispering-gallery modes via dielectric and metallic tuning

10 Jan 2019 Vogt Dominik Walter Jones Angus Harvey Schwefel Harald G. L. Leonhardt Rainer

The vast majority of resonant systems show a red-shift for the resonance frequency when a perturbation, e.g. losses, are introduced to the system. In contrast, here we report for the first time the experimental demonstration of both red- and anomalous blue-shifting of whispering-gallery modes (WGMs) using dielectric and metallic substrates... (read more)

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