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

Zhaofeng Li; Humeyra Caglayan; Evrim Colak; Ekmel Ozbay

doi:10.1063/1.2829799

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

Zhaofeng Li, Humeyra Caglayan, Evrim Colak, Ekmel Ozbay

Research output: Contribution to journal › Article › Scientific › peer-review

20 Citations (Scopus)

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.

Original language	English
Article number	011128
Journal	Applied Physics Letters
Volume	92
Issue number	1
DOIs	https://doi.org/10.1063/1.2829799
Publication status	Published - 2008
Externally published	Yes
Publication type	A1 Journal article-refereed

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2829799

Cite this

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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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AU - Colak, Evrim

AU - Ozbay, Ekmel

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

Abstract

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