Structural tuning of nonlinear terahertz metamaterials using broadside coupled split ring resonators

Tuning the nonlinear response of coupled split-ring resonators

We introduce the concept of controlling the nonlinear response of the metamaterial by altering its internal structure. We experimentally demonstrate tuning of the nonlinear response of 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. By o...

Decoupling crossover in asymmetric broadside coupled split-ring resonators at terahertz frequencies

Terahertz metamaterials with semiconductor split-ring resonators for magnetostatic tunability.

We studied a metasurface constituted as a periodic array of semiconductor split-ring resonators. The resonance frequencies of the metasurface excited by normally incident light were found to be continuously tunable in the terahertz regime through an external magnetostatic field of suitable orientation. As such metasurfaces can be assembled into 3D metamaterials, the foregoing conclusion also ap...

Tunable split-ring resonators for nonlinear negative-index metamaterials.

We study experimentally the dynamic tunability and self-induced nonlinearity of split-ring resonators incorporating variable capacitance diodes. We demonstrate that the eigenfrequencies of the resonators can be tuned over a wide frequency range, and significantly, we show that the self-induced nonlinear effects observed in the varactor-loaded split-ring resonator structures can appear at relati...

Multistability and localization in coupled nonlinear split–ring resonators

a Department of Physics, University of Crete and Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 2208, 71003 Heraklion, Greece b Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile c Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0...