Chalcogenide active photonics
2017
Chalcogenides are materials that substantially consist of sulphur, selenium, and tellurium. Their dielectric properties
can be tuned by thermally induced structural phase transitions, photostructural transitions, and dissolution
of metal dopants. We have designed active photonic structures using a range of `tuneable' chalcogenides. The
resonant frequency of plasmonic structures was tuned over a 100 nm band in the visible, metal-chalcogenidemetal
structures provide tuning of over a band of 0.5 μm in the mid-infrared, and hyperbolic metamaterials
incorporating chalcogenides provide a means to alter the radiative decay rate of
uorescent photons.
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