Novel THz metamaterial designs: From near- and far-field coupling to high-q resonances

Ibraheem Al-Naib, Christian Jansen, Ranjan Singh, Markus Walther, Martin Koch

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

In this paper, we review recent research on terahertz (THz) metamaterials focusing on structures which exhibit sharp resonances with high quality factors. After a short introduction to common design concepts, near-field measurements are presented to discuss the resonant coupling and excitation mechanisms. High-$Q$ -factor metasurfaces based on symmetric and asymmetric resonators, characterized by far-field transmission measurements, are discussed including structures with trapped and high-order resonance modes. Numerical simulations of the current distributions inside the metaatoms give insight into the resonance mechanisms. The novel structures discussed here offer intriguing properties and have potential applications in design and development of filters, thin-film sensors, and slow-light devices.

Original languageEnglish
Article number6661459
Pages (from-to)772-782
Number of pages11
JournalIEEE Transactions on Terahertz Science and Technology
Volume3
Issue number6
DOIs
StatePublished - Nov 2013
Externally publishedYes

Keywords

  • Asymmetric resonance
  • coupling effects
  • filters
  • metamaterials (MTMs)
  • periodic structures
  • quality factor
  • sensors
  • terahertz (THz) spectroscopy

ASJC Scopus subject areas

  • Radiation
  • Electrical and Electronic Engineering

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