Metamaterial-based terahertz adjustable polarized wave insensitive electromagnetically-induced transparency device
An electromagnetically induced transparent, terahertz technology, applied in electrical components, antennas, etc., can solve the problems of complex structure and less structure, and achieve the effect of simple structure pattern and easy preparation
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[0041] Two implementation methods of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0042] The present invention is a terahertz adjustable polarization-insensitive electromagnetically induced transparent device based on metamaterials. The electromagnetically induced transparent device is a periodic structure, including several basic units periodically arranged in the same direction on the xy plane; Figure 1a As shown, each basic unit structure is the same, including the graphene layer 1 on the upper layer and the dielectric layer 2 on the lower layer.
[0043] The model period in this example is P=6.25um. The dielectric layer is silicon dioxide with a dielectric constant of 4.41, a loss tangent of 0.0004, and a thickness of t=50um. The parameters of graphene are selected as: Fermi level E F =0.9eV, T=300K, Г=2.4THz, graphene thickness h 1 = 0.34nm. The selected values of other parameters are s 1 = 2.2um, s 2 =0....
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