Accession Number:

AD1052654

Title:

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

Descriptive Note:

Journal Article - Open Access

Corporate Author:

1Department of Electrical and Computer Engineering, Rice University Houston United States

Report Date:

2014-02-10

Pagination or Media Count:

7.0

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 36 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.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE