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Thermal tuning of mid-infrared plasmonic antenna arrays using a phase change material
Kats, Mikhail A. Blanchard, Romain Qazilbash, M. M.
Kats, Mikhail A.
Blanchard, Romain
Qazilbash, M. M.
Abstract
We demonstrate that the resonances of infrared plasmonic antennas can be tuned or switched on/off by taking advantage of the thermally driven insulator-to-metal phase transition in vanadium dioxide (VO2). Y-shaped antennas were fabricated on a 180 nm film of VO2 deposited on a sapphire substrate, and their resonances were shown to depend on the temperature of the VO2 film in proximity of its phase transition, in good agreement with full-wave simulations. We achieved tunability of the resonance wavelength of approximately 10% (>1 μm at λ ∼ 10 μm).
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2013-01-01
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Physics
DOI
https://doi.org/10.1364/OL.38.000368