Size Effect and Aperture Configuration Dependence of Extraordinary Optical Transmission through Penrose Metal Hole Arrays in the Terahertz Region

Yoji Jimba, Hiroshi Miyazaki

Research output: Contribution to journalArticlepeer-review

Abstract

Extraordinary optical transmission (EOT) through Penrose metal hole arrays (PMHA) in the terahertz region is investigated numerically by using coupled-mode analysis. Spectral change of the transmittance is studied at resonant frequencies by increasing the number of holes and comparing the spectra of PMHA and a periodic metal hole arrays (MHA). While the resonant mode of MHA is excited in periodic order along one direction, the resonant mode on PMHA has a complicated shape. It seems that the propagating length of surface wave of PMHA is shorter than that of the MHA. Therefore, when the number of holes is increased, increasing rate of the resonant transmittance through PMHA is smaller than that through MHA. In addition, the transmission spectra for three kinds of generalized PHMA are analyzed numerically. Although the distributions of holes in these PMHA are different from each other in real space, the transmission spectra have almost the same shape. Consequently, the structure given by the aperture configuration of PMHA in reciprocal lattice space has stronger effects on EOT through metal hole arrays, rather than that in real space.

Original languageEnglish
Pages (from-to)12-19
Number of pages8
JournalElectronics and Communications in Japan
Volume99
Issue number12
DOIs
Publication statusPublished - 2016 Dec 1

Keywords

  • Penrose lattice
  • coupled-mode method
  • extraordinary optical transmission
  • metal hole arrays
  • terahertz region

ASJC Scopus subject areas

  • Signal Processing
  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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