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Updated: May 14, 2026
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
Thermal tuning of mid-infrared plasmonic antenna arrays using a phase change material
Mikhail A Kats1, Romain Blanchard, Patrice Genevet
1School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
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 (VO(2)). Y-shaped antennas were fabricated on a 180 nm film of VO(2) deposited on a sapphire substrate, and their resonances were shown to depend on the temperature of the VO(2) 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).
