Abstract-Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial

O. Buchnev¹, J. Wallauer², M. Walther², M. Kaczmarek³, N. I. Zheludev^1,4, and V. A. Fedotov¹

http://apl.aip.org/resource/1/applab/v103/i14/p141904_s1?isAuthorized=no

We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12 μm thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crystal, which enabled to achieve a reversible single-pass absolute transmission change of 20% and a phase change of 40° at only 20 V.

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