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Opt Express. 2008 Oct 27;16(22):18241-8.

Terahertz surface wave propagation and focusing on conical metal wires.

Author information

  • 1College of Electronic Science and Technology, Shenzhen University Shenzhen, China.

Abstract

A theory for treating terahertz (THz) surface wave propagation and focusing on conical metal wire waveguides is presented. According to the theory, the surface wave propagation and focusing on the conical copper wire waveguide is investigated by the numerical calculation, and the results show the theory agrees with experimental measurement result obtained by Ji et al. The theory presented provides a basis for describing surface wave propagation and focusing on conical metal wire waveguides and, importantly, the theory suggests that a simple conical metal wire can be used for subwavelength energy concentration and superfocusing.

PMID:
18958101
[PubMed]
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