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We have measured the transmission spectra of splitring resonator metamaterials from 0 to 10 THz for parallel and perpendicular polarizations. Calculations of the lattice and plasmon mode dispersion relations in combination with electromagnetic simulations confirm the presence of multiple higher order lattice and plasmon modes. High frequency high-Q resonances that result from plasmon-lattice mode...
A periodic lattice of frequency-detuned and displaced resonant metallic rods is used to generate diffraction enhanced transparency (DET) at terahertz frequencies. Using far-field spectroscopy, we demonstrate the appearance of a sharp transmission line in the otherwise broad extinction spectrum of the rod array, accompanied by strong group delay at the frequency of the transparency. Probing further...
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