(9) Yuri Kivshar
Australian National University, Australia.
Title: Nonlinear metamaterials
Abstract:
We will overview the recent studies of nonlinear tunable metamaterials and various nonlinear effects which can be observed in such structures. In particular, we will also discuss the experimental studies of tunable nonlinear microwave metamaterials composed of double split-ring resonators and wires where a varactor diode is introduced into each resonator so that the magnetic resonance can be tuned dynamically by varying the input power.
We show that at higher powers the transmission of the metamaterial becomes power dependent, and such metamaterial demonstrates various nonlinear properties. We discuss several different nonlinear effects: power-dependent transmission properties and selective generation of higher harmonics, nonlinearity-induced enhancement (or suppression) of wave transmission.
In addition, we will overview some other nonlinear structures with negative refraction.
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