Parametric oscillator based on a single-layer resonant metamaterial |
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Authors: | Ekaterina Poutrina Stéphane Larouche |
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Institution: | Center for Metamaterials and Integrated Plasmonics, Department of Electrical and Computer Engineering, Pratt School of Engineering, Duke University, Box 90291, Durham, NC 27708, USA |
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Abstract: | We perform numerical simulations demonstrating parametric generation and oscillation processes in a single-layer of metamaterial composed of split ring resonators (SRRs). In general, a parametric resonance is achieved by introducing a time-modulation of one of the energy-storing parameters of a resonant system. An individual SRR is a resonant system that can be modeled as an RLC-circuit inductively coupled to an applied time-varying magnetic field. The relatively simple circuit model can be employed to establish the range of parameters providing the growth of parametric oscillations within the SRR medium. We relate the numerically predicted circuit parameters that ensure the buildup of parametric oscillations to those parameters expected to be available in a modified SRR medium, in which lumped element varactors integrated into the SRRs are used as modulable capacitance elements. |
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Keywords: | Nonlinear metamaterial Parametric generation Loss compensation RLC-circuit model Electro-optic effect Frequency converter |
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