Analysis of transmission line meta-materials at optical wavelength

Takeshi Baba, Teruya Ishihara

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Following the transmission line formalism, we design a metamaterial structure that exhibts negative refraction in the red part of the visible spectrum.The structure is a waveguide consisting of an Al2O 3 top layer, 2D array of Au dots, an Al2O3 spacer and a Ag ground plane. The Au dot array with period of 250 nm were patterned by an electron beam lithography technique. We confirm experimentally and numerically that threre is a mode shifting to the lower energy side as the wavevector increases. Both permittivity and permeability are found to be negative in that region. Focussing effect of a flat structure, which is a characteristic feature of a negative index metamaterial, is also confirmed with FDTD caculation.

Original languageEnglish
Pages (from-to)327-329
Number of pages3
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Issue number1
Publication statusPublished - 2009 Apr 6
Event8th International Conference on Excitonic Processes in Condensed Matter, EXCON'08 - Kyoto, Japan
Duration: 2008 Jun 222008 Jun 27

ASJC Scopus subject areas

  • Condensed Matter Physics


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