Flexible helices for nonlinear metamaterials.

Slobozhanyuk, Alexey P; Lapine, Mikhail; Powell, David A; Shadrivov, Ilya V; Kivshar, Yuri S; McPhedran, Ross C; Belov, Pavel A · Adv Mater · 2013

basic_science · Level V

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Abstract

The successful fabrication and experimental verification of a novel metamaterial based on flexible metallic helices is reported. The helices undergo compression under the influence of incident radiation, demonstrating a nonlinear chiral electromagnetic response, associated with the power-dependent change in the helix pitch. This design is promising for application to power-dependent polarization rotation of propagating waves.