High-Q Terahertz Fano Resonance with Extraordinary Transmission in Concentric Ring Apertures

Abstract

We experimentally demonstrate a polarization-independent terahertz Fano resonance with extraordinary transmission when light passes through two concentric subwavelength ring apertures in the metal film. The Fano resonance is enabled by the coupling between a high-Q dark mode and a low-Q bright mode. We find the Q factor of the dark mode ranges from 23 to 40, which is 3~6 times higher than Q of bright mode. We show the Fano resonance can be tuned by varying the geometry and dimension of the structures. We also demonstrate a polarization dependent Fano resonance in a modified structure of concentric ring apertures.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 10, 2014
Accession Number
AD1052654

Entities

People

  • Daniel Mittleman
  • Daniel V. Nickel
  • Igal Brener
  • Jason Dominguez
  • Jie Shu
  • Kimberly Reichel
  • Qianfan Xu
  • Weilu Gao

Organizations

  • Rice University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Films
  • Frequency
  • Materials Laboratories
  • Materials Science
  • Metamaterials
  • Nanotechnology
  • Optical Properties
  • Optics
  • Phase Transformations
  • Q Factor
  • Resonance
  • Resonant Frequency
  • Scattering
  • Spectra
  • Terahertz Metamaterials
  • Terahertz Radiation

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Optical Physics and Photonics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.