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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 11 — Jun. 1, 2014
  • pp: 3282–3285

Radially oscillating and quasi-guided surface plasmon polaritons in cylindrical metallic nanostructures

Hang Lian, Ying Gu, Luojia Wang, Haitao Liu, and Qihuang Gong  »View Author Affiliations


Optics Letters, Vol. 39, Issue 11, pp. 3282-3285 (2014)
http://dx.doi.org/10.1364/OL.39.003282


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Abstract

We analytically propose radially oscillating and quasi-guided surface plasmon polaritons (SPPs) by designing the outer and core dielectric permittivities εa and εc of a cylindrical metallic nanotube. When the propagation constant satisfies εa<Re(kz/k0)<εc, the electromagnetic field propagates along the radial direction in the core region and decays outside the nanotube, forming a standing radially oscillating SPP. In contrast, when εc<Re(kz/k0)<εa, the electromagnetic field decays in the core region and propagates outside the nanotube, forming a quasi-guided SPP. The propagation length of both SPPs can reach tens of micrometers, in particular, the radially oscillating SPPs have an ultrastrong light confinement. Finally, we design position-flexible broadband plasmonic router based on quasi-guided SPPs, and we also discuss the advantages of a nanolaser based on radially oscillating SPPs.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(310.2790) Thin films : Guided waves
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Optics at Surfaces

History
Original Manuscript: March 24, 2014
Revised Manuscript: April 22, 2014
Manuscript Accepted: April 24, 2014
Published: May 27, 2014

Citation
Hang Lian, Ying Gu, Luojia Wang, Haitao Liu, and Qihuang Gong, "Radially oscillating and quasi-guided surface plasmon polaritons in cylindrical metallic nanostructures," Opt. Lett. 39, 3282-3285 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-11-3282

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