Title: Terahertz surface plasmon polaritons on periodically corrugated metal surfaces
Authors: Shen, Linfang
Chen, Xudong
Yang, Tzong-Jer
電子物理學系
Department of Electrophysics
Issue Date: 3-Mar-2008
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. (C) 2007 Optical Society of America.
URI: http://dx.doi.org/10.1364/OE.16.003326
http://hdl.handle.net/11536/9589
ISSN: 1094-4087
DOI: 10.1364/OE.16.003326
Journal: OPTICS EXPRESS
Volume: 16
Issue: 5
Begin Page: 3326
End Page: 3333
Appears in Collections:Articles


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