Journal
OPTICS LETTERS
Volume 38, Issue 3, Pages 368-370Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.000368
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- AFOSR [FA9550-12-1-0289]
- ONR
- NSF
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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 mu m at lambda similar to 10 mu m). (C) 2013 Optical Society of America
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