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

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

doi:10.1109/JSTQE.2008.917032

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 journal › Article › peer-review

62 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 language	English (US)
Pages (from-to)	486-490
Number of pages	5
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	14
Issue number	2
DOIs	https://doi.org/10.1109/JSTQE.2008.917032
State	Published - Mar 1 2008
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/JSTQE.2008.917032

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title = "From waveguiding to spatial localization of THz waves within a plasmonic metallic grating",

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. {\textcopyright} 2006 IEEE.",

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AU - Ding, Yujie J.

AU - Bartoli, Filbert J.

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N2 - 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.

AB - 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.

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

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