Physics – Optics
Scientific paper
2010-08-26
Physics
Optics
6 pages, 4 figures (slight revision)
Scientific paper
Recent numerical studies have demonstrated the possibility of achieving substantial enhancements in the transmission of transverse-electric-polarized electromagnetic fields through subwavelength slits in a thin metallic screen by placing single or paired metallic cut-wire arrays at a close distance from the screen. In this Letter, we report on the first experimental evidence of such extraordinary transmission phenomena, via microwave (X/Ku-band) measurements on printed-circuit-board prototypes. Experimental results agree very well with full-wave numerical predictions, and indicate an intrinsic robustness of the enhanced transmission phenomena with respect to fabrication tolerances and experimental imperfections.
Andreone Antonello
Castaldi Giuseppe
Galdi Vincenzo
Gallina Ilaria
Gennaro Emiliano Di
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