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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 5 — Mar. 3, 2008
  • pp: 3326–3333

Terahertz surface plasmon polaritons on periodically corrugated metal surfaces

Linfang Shen, Xudong Chen, and Tzong-Jer Yang  »View Author Affiliations


Optics Express, Vol. 16, Issue 5, pp. 3326-3333 (2008)
http://dx.doi.org/10.1364/OE.16.003326


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Abstract

Based on a modal expansion of electromagnetic fields, a rigorous method for analyzing surface plasmon polaritons (SPPs) on a periodically corrugated metal surface has been formulated in this paper. This method takes into account the finite conductivity of the metal as well as higher-order modes within the grooves of the surface structure, thus is able to accurately calculate the loss of these spoof SPPs propagating along the structured surface. In the terahertz (THz) frequency range, the properties of the dispersion and loss of spoof SPPs on corrugated Al surfaces are analyzed. For spoof SPPs at THz frequencies, the strong confinement of the fields is often accompanied with considerable absorption loss, but the performance of both low-loss propagation and subwavelength field confinement for spoof SPPs can be achieved by the optimum design of surface structure.

© 2008 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves

ToC Category:
Optics at Surfaces

History
Original Manuscript: August 6, 2007
Revised Manuscript: September 24, 2007
Manuscript Accepted: September 24, 2007
Published: February 27, 2008

Citation
Linfang Shen, Xudong Chen, and Tzong-Jer Yang, "Terahertz surface plasmon polaritons on periodically corrugated metal surfaces," Opt. Express 16, 3326-3333 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-5-3326


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