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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 10 — May. 10, 2010
  • pp: 10120–10126

Diabolical point and conical-like diffraction in periodic plasmonic nanostructures

Sung Hyun Nam, Antoinette J. Taylor, and Anatoly Efimov  »View Author Affiliations


Optics Express, Vol. 18, Issue 10, pp. 10120-10126 (2010)
http://dx.doi.org/10.1364/OE.18.010120


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Abstract

We present the formation of a singular (diabolical) point in k-space from a periodic metal-dielectric waveguide array. The singularity originates from the balance between alternating normal and anomalous coupling. We numerically demonstrate a strong diffraction anomaly (conical-like diffraction) near the singular point. We also show the evolution of the diffraction pattern with band deformation. The resultant peculiar propagation dynamics of surface plasmon polaritons could provide a new toolset for manipulating light on the nano-scale.

© 2010 OSA

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(240.6680) Optics at surfaces : Surface plasmons
(240.7040) Optics at surfaces : Tunneling

ToC Category:
Optics at Surfaces

History
Original Manuscript: March 2, 2010
Revised Manuscript: April 22, 2010
Manuscript Accepted: April 22, 2010
Published: April 29, 2010

Citation
Sung Hyun Nam, Antoinette J. Taylor, and Anatoly Efimov, "Diabolical point and conical-like diffraction in periodic plasmonic nanostructures," Opt. Express 18, 10120-10126 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-10-10120


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