Abstract
A plasma metamaterial that exhibits negative refraction in the terahertz region of the spectrum has been demonstrated in the present communication. The plasma metamaterial is an uniaxial anisotropic metamaterial which is a multilayer stack of alternating plasma layer and background material. The negative refraction in the terahertz region of the proposed metamaterial is explored. The effects of the losses in plasma, plasma density, plasma filling factor, and dielectric constant of background material on the critical frequency and the band width of negative refraction are examined and discussed.
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