Journal
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume 12, Issue 6, Pages 1116-1122Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2006.879577
Keywords
anisotropic material; metal slit; optical metamaterial; subwavelength resonance
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It has been shown that a metal film with a one-dimensional array of subwavelength cut-through slits can be accurately modeled as an anisotropic and uniform metamaterial film with nondispersive electric permittivity [(epsilon) over bar] and magnetic permeability [(mu) over bar] tensors. This model has an interesting scaling property: The values for the thickness L can be chosen at arbitrarily, provided that [(epsilon) over bar] and [(mu) over bar] are scaled accordingly. The analytical expressions of the corrections due to near fields have also been given. This framework provides an intuitive and precise model for the understanding of the metal slit arrays in the subwavelength regime.
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