Abstract

We demonstrate experimentally that Tamm plasmons can be supported by a dielectric mirror interfaced with a metasurface, a discontinuous thin metal film periodically patterned on the sub-wavelength scale. Not only do Tamm plasmons survive the nano-patterning of the metal film, but they also become sensitive to external perturbations, as a result. In particular, by depositing a nematic liquid crystal on the outer side of the metasurface we were able to red-shift a Tamm plasmon by 35 nm, while electrical switching of the liquid crystal enabled us to tune the wavelength of this notoriously inert excitation within a 10 nm range.

© 2020 The Author(s)

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More Like This
Engineering and Controlling Optical Tamm States Confined at Plasmonic Metasurfaces

Oleksandr Buchnev, Alexandr Belosludtsev, Victor Reshetnyak, Dean R. Evans, and Vassili A. Fedotov
FM1B.5 Frontiers in Optics (FiO) 2020

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