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arXiv · 0805.3907

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
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Abstract

We report the enhanced transmission of electromagnetic waves through a single subwavelength aperture by making use of the resonance behavior of 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 twenty times smaller than the resonance wavelength. 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 yield enhanced transmission. Good agreement is obtained between the microwave measurements and numerical simulations.

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Koray Aydin, A. Ozgur Cakmak, Levent Sahin, Z. Li, Filiberto Bilotti, Lucio Vegni, Ekmel Ozbay. 2008-05-26. Split ring resonator-coupled enhanced transmission through a single subwavelength aperture. https://doi.org/10.1103/physrevlett.102.013904

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