Physics – Optics
Scientific paper
2011-09-16
Physics
Optics
Scientific paper
We introduce the concept of controlling the nonlinear response of the metamaterial by altering its internal structure. We experimentally demonstrate that we can tune the nonlinear frequency shift for two coupled split-ring resonators by changing their mutual position. This effect is achieved through modification of the structure of the coupled resonant modes and their interaction with the incident field. We explain these results with the aid of numerical modeling, which shows that by offsetting the resonators we control the maximum currents through the nonlinear driving elements which affects the nonlinear response of the system.
Hannam Kirsty E.
Kivshar Yuri S.
Powell David A.
Shadrivov Ilya V.
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