Enhanced transmission and directivity from metallic subwavelength apertures with nonuniform and nonperiodic grooves

Date

2008

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Source Title

Applied Physics Letters

Print ISSN

0003-6951

Electronic ISSN

1077-3118

Publisher

AIP Publishing LLC

Volume

92

Issue

1

Pages

011128-3 - 011128-1

Language

English

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Abstract

Nonuniform and nonperiodic grooves are used to enhance the transmission and directivity of emissions from a single metallic subwavelength aperture. By using nonuniform and nonperiodic grooves, the amplitude and phase of the diffracted power flow from each groove can be adjusted properly. As a result, the transmission and emission directivity can be further improved when compared to apertures with uniform and periodic grooves. Our experimental results are in good agreement with the finite difference time domain simulation results.

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