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Tuning nonlinear metamaterials with light

Kapitanova, P. V. ; Filonov, D. S. ; Voroshilov, M. ; Shadrivov, I. V. ; Maslovski , S. ; Belov, P. A. ; S., Yu. S.

Tuning nonlinear metamaterials with light, Proc Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, St. Petersburg, Russia, Vol. 1, pp. 264 - 266, September, 2012.

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We introduce a novel approach for creating tunable electromagnetic metamaterials. We demonstrate experimentally that magnetic resonance of a split-ring resonator (”meta-atom” of a composite material) with a photodiode and a varactor diode can be tuned by changing the intensity of an external light source. Moreover, for two coupled resonators we show that we can achieve light-induced switching between dark and bright modes. We study experimentally dynamic tunability and self-induced nonlinearity of the light-tunable ”meta-atoms”, and also demonstrate a light-controllable magnetic reflector array based on tunable split-ring resonators.