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Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Sep;80(3 Pt 2):036606. Epub 2009 Sep 23.

Enhanced transmission of transverse electric waves through subwavelength slits in a thin metallic film.

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  • 1Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.

Abstract

By adding an array of metallic cut wires, the transmission of transverse electric (TE) waves (the electric field is parallel to the slits) through subwavelength slits in a thin metallic film is significantly enhanced. An 800-fold enhanced transmission is obtained compared to the case without the cut wires. It is demonstrated that a TE incident wave is highly confined by the cut wires, due to the excitation of the electric dipolelike resonance, and then effectively squeezed into and through the subwavelength slits.

PMID:
19905237
[PubMed - indexed for MEDLINE]
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