Resonances of split-ring resonator metamaterials in the near infrared
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We study the spectral response of optical metamaterials consisting of gold split-ring resonators. We utilize reflection spectroscopy in the near infrared region at normal incidence in the experiments. Our theoretical modeling is based on rigorous diffraction theory. We perform a comprehensive analysis of the dependence of the features of both the electric and the oscillating-circuit resonance on the geometry of the metamaterial. We show that theory and experiment are in good agreement.
KeywordsResonance Frequency Plasmonic Resonance Negative Refractive Index Single Wire Plasmon Frequency
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