Investigating far-field spectra and near-field features of extraordinary optical transmission through periodic U- to H-shaped apertures

Hui Hsin Hsiao, Hao Fu Huang, Si Chen Lee, Hung Chun Chang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

By exploiting the in-house finite-difference time-domain (FDTD) program, the optical properties of a designated 2-D array of U- to H-shaped holes perforated on a metallic film are analyzed. Some specific near-field features are found to be associated with the three mechanisms underlying the transmission spectral profiles, namely, excitation of surface electromagnetic (EM) modes, Wood's anomalies (WAs), and shape resonances (SRs), thus providing a way to reveal the physical nature of the enhanced transmission phenomenon.

Original languageEnglish
Article number6156512
Pages (from-to)387-398
Number of pages12
JournalIEEE Photonics Journal
Volume4
Issue number2
DOIs
Publication statusPublished - 2012
Externally publishedYes

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Keywords

  • apertures
  • diffraction
  • infrared
  • Surface plasmons
  • Wood's anomalies (WAs)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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