Split-ring-resonator-coupled enhanced transmission through a single subwavelength aperture

Koray Aydin*, A. Ozgur Cakmak, Levent Sahin, Z. Li, Filiberto Bilotti, Lucio Vegni, Ekmel Ozbay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Scopus citations

Abstract

We report the enhanced transmission of electromagnetic waves through a single subwavelength aperture by using a split-ring resonator (SRR) at microwave frequencies. By placing a single SRR at the near field of the aperture, strongly localized electromagnetic fields are effectively coupled to the aperture with a radius that is 20 times smaller than the resonance wavelength (r/λ=0.05). We obtained 740-fold transmission enhancement by exciting the electric resonance of SRR. A different coupling mechanism, through the magnetic resonance of SRR, is also verified to lead to enhanced transmission.

Original languageEnglish (US)
Article number013904
JournalPhysical review letters
Volume102
Issue number1
DOIs
StatePublished - Jan 5 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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