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Ohmic losses severely limit the performance of metamaterials. High-index semiconductors offer an attractive alternative. We review several meta-surfaces based on silicon and silicon carbide enabling infrared applications such as polarization manipulation and thermal emission.
We demonstrate theoretically and experimentally that electrically gated single-layer graphene can be used to inductively tune the infrared optical response of Fano-resonant meta-surfaces. The induced spectral shifts are used to extract graphene's electronic properties.
We experimentally investigate the nonlinear propagation in thick optical negative index materials. The ratio of the forward to backward four wave mixing generation was shown to follow the prediction of the phase-matching relations.
We demonstrate a topological transition in the iso-frequency surface of a strongly anisotropic metamaterial and show the potential of this optical topological transition for controlling light-matter interaction.
In this presentation we show that the recently discovered nonlocal optical behaviour of plasmonic nanorod metamaterials enables an enhanced, ultrafast, and nonlinear optical response of this hyperbolic structure. In particular, a large (80%) change of transmission through this subwavelength thick slab of metamaterial subjected to a low control light fluence of 7 mJ/cm2, is observed when the conditions...
We demonstrate nonlinear effects induced by an intense terahertz field on the transmission response of metamaterial structures fabricated on a silicon wafer, as well as ultrafast modulation in the terahertz response of our samples.
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