Birefringence induced polarization-independent and nearly all-angle transparency through a metallic film

Details Birefringence induced polarization-independent and nearly all-angle transparency through a metallic film Birefringence induced polarization-independent and nearly all-angle transparency through a metallic film

2011-06-22

arxiv.org/abs/1106.4422v1

Physics

Optics

9 pages

Scientific paper

We propose an birefringence route to perfect electromagnetic (EM) wave tunneling through a metallic film which relies on homogeneous birefringent coatings with moderate and positive parameters only. EM transparency is achieved in such an birefringent-metal-birefringent (BMB) structure for both polarizations and over nearly all incident angles. The stringent restrictions in conventional dielectric-metal-dielectric media, i.e., dielectrics with extremely negative permittivity, high magnetic field and polarization dependence (only for TE waves), are not required in our method. The criterion for perfect transmission is obtained by analyzing the effective medium theory and EM fields of such a birefringent structure. The solutions hold for lossless and lossy cases in a quite large frequency range.

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