corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 102 » Issue 1
< Previous Article | Next Article >

Phys. Rev. Lett. 102, 013904 (2009) [4 pages]

Split-Ring-Resonator-Coupled Enhanced Transmission through a Single Subwavelength Aperture

Download: PDF (1,814 kB) Buy this article Export: BibTeX or EndNote (RIS)

Koray Aydin1,2,*, A. Ozgur Cakmak1, Levent Sahin1, Z. Li1, Filiberto Bilotti3, Lucio Vegni3, and Ekmel Ozbay1
1Department of Physics, Nanotechnology Research Center, and Department of Electrical and Electronics Engineering, Bilkent University, 06800, Ankara, Turkey
2Thomas J. Watson Laboratories of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA
3Department of Applied Electronics, University of Roma Tre, Rome 00146, Italy

Received 26 May 2008; revised 20 October 2008; published 7 January 2009

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.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.013904
DOI:
10.1103/PhysRevLett.102.013904
PACS:
41.20.Jb, 42.25.Bs, 42.79.Ag

*To whom all correspondence should be addressed.

aydin@fen.bilkent.edu.tr

 
< Previous Article | Next Article >