Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2216105
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The dispersion relation and confinement of plasmon-polariton-like terahertz surface modes sustained by a perfectly conducting planar surface patterned with a regular lattice of holes are studied using full-field three-dimensional numerical simulations. Edge coupling and subsequent surface guiding with subwavelength vertical confinement of the frequency components below the band edge of the surface mode is demonstrated for a broadband pulse with 0.5 THz <= f <= 2 THz. Additionally, the constraints imposed by lattice constant and hole size on the creation of defect waveguides offering lateral confinement are discussed. (c) 2006 American Institute of Physics.
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