A metamaterial absorber for the terahertz regime: design, fabrication and characterization.

Journal Article (Journal Article)

We present a metamaterial that acts as a strongly resonant absorber at terahertz frequencies. Our design consists of a bilayer unit cell which allows for maximization of the absorption through independent tuning of the electrical permittivity and magnetic permeability. An experimental absorptivity of 70% at 1.3 terahertz is demonstrated. We utilize only a single unit cell in the propagation direction, thus achieving an absorption coefficient alpha = 2000 cm(-1). These metamaterials are promising candidates as absorbing elements for thermally based THz imaging, due to their relatively low volume, low density, and narrow band response.

Full Text

Duke Authors

Cited Authors

  • Tao, H; Landy, NI; Bingham, CM; Zhang, X; Averitt, RD; Padilla, WJ

Published Date

  • May 2008

Published In

Volume / Issue

  • 16 / 10

Start / End Page

  • 7181 - 7188

PubMed ID

  • 18545422

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.16.007181


  • eng