Resonant Transmission of Electromagnetic Fields through Subwavelength Zero-$\epsilon$ SlitsResonant Transmission of Electromagnetic Fields through Subwavelength Zero-$\epsilon$ Slits

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 Author Halterman, Klaus ♦ Feng, Simin Source arXiv.org Content type Text File Format PDF Date of Submission 2008-08-12 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword Physics - Optics ♦ Condensed Matter - Other Condensed Matter ♦ physics:cond-mat ♦ physics:physics Abstract We theoretically investigate the transmission of electromagnetic radiation through a metal plate with a zero-$\epsilon$ metamaterial slit, where the permittivity tends towards zero over a given bandwidth. Our analytic results demonstrate that the transmission coefficient can be substantial for a broad range of slit geometries, including subwavelength widths that are many wavelengths long. This novel resonant effect has features quite unlike the Fabry-P\'{e}rot-like resonances that have been observed in conductors with deep channels. We further reveal that these high impedance ultranarrow zero-$\epsilon$ channels can have significantly {\it greater} transmission compared to slits with no wave impedance difference across them. Description Reference: Phys. Rev. A 78, 021805 (2008) Educational Use Research Learning Resource Type Article