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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 21 — Nov. 1, 2013
  • pp: 4453–4456

Broadband and efficient plasmonic control in the near-infrared and visible via strong interference of surface plasmon polaritons

C. H. Gan and G. R. Nash  »View Author Affiliations


Optics Letters, Vol. 38, Issue 21, pp. 4453-4456 (2013)
http://dx.doi.org/10.1364/OL.38.004453


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Abstract

Broadband and tunable control of surface plasmon polaritons in the near-infrared and visible spectrum is demonstrated theoretically and numerically with a pair of phased nanoslits. We establish, with simulations supported by a coupled wave model, that by dividing the incident power equally between two input channels, the maximum plasmon intensity deliverable to either side of the nanoslit pair is twice that for an isolated slit. For a broadband source, a compact device with nanoslit separation of the order of a tenth of the wavelength is shown to steer nearly all the generated plasmons to one side for the same phase delay, thereby achieving a broadband unidirectional plasmon launcher. The reported effect can be applied to the design of ultra-broadband and efficient tunable plasmonic devices.

© 2013 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.1960) Physical optics : Diffraction theory
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optoelectronics

History
Original Manuscript: August 29, 2013
Revised Manuscript: September 30, 2013
Manuscript Accepted: September 30, 2013
Published: October 31, 2013

Citation
C. H. Gan and G. R. Nash, "Broadband and efficient plasmonic control in the near-infrared and visible via strong interference of surface plasmon polaritons," Opt. Lett. 38, 4453-4456 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-21-4453


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