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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 17 — Sep. 1, 2009
  • pp: 2569–2571

Tunable directional beaming from subwavelength metal slits with metal–dielectric composite surface gratings

Hwi Kim, Junghyun Park, and Byoungho Lee  »View Author Affiliations


Optics Letters, Vol. 34, Issue 17, pp. 2569-2571 (2009)
http://dx.doi.org/10.1364/OL.34.002569


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Abstract

A structure for surface-plasmon-polariton mediated directional off-axis beaming with a dynamic tunability of radiation direction is proposed. The key finding in this Letter is that properly designed metal–dielectric composite grating structures surrounding subwavelength metal slit produce a dynamically tunable off-axis beaming effect with variation of the grating permittivity value. The controllability of beam direction by the grating permittivity value opens a way to develop active plasmonic devices based on the beaming effect.

© 2009 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optics at Surfaces

History
Original Manuscript: June 2, 2009
Revised Manuscript: July 24, 2009
Manuscript Accepted: July 26, 2009
Published: August 19, 2009

Citation
Hwi Kim, Junghyun Park, and Byoungho Lee, "Tunable directional beaming from subwavelength metal slits with metal–dielectric composite surface gratings," Opt. Lett. 34, 2569-2571 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-17-2569

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