Metamaterial inspired enhanced far-field transmission through a subwavelength nano-hole

Date
2010-06-02
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Source Title
Physica Status Solidi - Rapid Research Letters
Print ISSN
1862-6254
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Publisher
WILEY
Volume
4
Issue
10
Pages
286 - 288
Language
English
Type
Article
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Abstract

In the present study, we first demonstrate the polarization and orientation dependent transmission response of split ring resonators at the infrared and visible band. Then, we numerically demonstrate a configuration for the enhancement of power passing through an electrically small hole. By using deep subwavelength optical split ring resonator antennas and couplers we achieved a 400-fold enhanced transmission from a subwavelength aperture area of the electrical size Λ 2/25. The power was transmitted to the far field with 3.9 dBi directivity at 300 THz. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) Transmission through a subwavelength aperture at the optical regime is quite low. The Letter by Alici and Ozbay shows how it can be enhanced and transferred to the far field by using a metamaterial inspired configuration composed of nano-scale split ring resonator antennas and couplers. A 400-fold power enhancement was achieved.

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Keywords
Metamaterials, Nano-antenna, Split ring resonators, Sub-wavelength optics
Citation
Published Version (Please cite this version)