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Enhanced transmission of electromagnetic waves through split-ring resonator-shaped apertures

J. Nanophoton. 5, 051812 (Jun 21, 2011); http://dx.doi.org/10.1117/1.3599873

Levent Sahin, Koray Aydin, and Ekmel Ozbay

Bilkent University, Nanotechnology Research Center, Bilkent, 06800, Ankara, Turkey lsahin@bilkent.edu.tr

Bilkent University, Department of Electrical and Electronics Engineering, 06800, Ankara, Turkey

California Institute of Technology, Thomas J. Watson Laboratory of Applied Physics, Pasadena, California 91125

Gonul Turhan Sayan

Middle East Technical University, Department of Electrical and Electronics Engineering, 06531, Ankara, Turkey

The design of aperture shape is a promising approach for enhanced transmission through a subwavelength aperture. We designed split-ring-resonator (SRR)-shaped apertures in order to increase the transmission through subwavelength apertures by making use of the strong localization of the electromagnetic field in SRR-shaped apertures. We obtained a promising result of 104-fold enhancement by utilizing SRR-shaped apertures. It is possible to use these proposed structures at optical frequencies by making several modifications such as decreasing the sharpness of edges and increasing the gap width. Since SRRs are already being realized at optical frequencies, our proposed SRR-shaped aperture structures are promising candidates for novel applications.

© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

History
Received Jan 21, 2011
Accepted May 24, 2011
Revised May 23, 2011
Published online Jun 21, 2011
Citation
Levent Sahin, Koray Aydin, Gonul Turhan Sayan and Ekmel Ozbay, "Enhanced transmission of electromagnetic waves through split-ring resonator-shaped apertures", J. Nanophoton. 5, 051812 (Jun 21, 2011); http://dx.doi.org/10.1117/1.3599873

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