From waveguiding to spatial localization of THz waves within a plasmonic metallic grating

Zhan Fu, Qiaoqiang Gan, Yujie J. Ding, Filbert J. Bartoli

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

In this paper, we have derived the dispersion relations for terahertz (THz) waves propagating in a direction parallel to the surface of a perfect conducting plane hosting an array of 1-D grooves having a constant depth. Since the dispersion relations for the fundamental surface mode resemble those for the surface plasmon polaritons (SPPs) at optical frequencies, such a uniform grating can be used to effectively guide THz waves. The dispersion relations for these spoof SPPs can be tailored by choosing the geometric parameters of the surface structures. We show that a graded metallic surface grating can be used to trap THz waves at different locations of the surface grating corresponding to the different wavelengths of the waves. © 2006 IEEE.
Original languageEnglish (US)
Pages (from-to)486-490
Number of pages5
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume14
Issue number2
DOIs
StatePublished - Mar 1 2008
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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