Optically tunable terahertz metamaterials on highly flexible substrates

Published

Journal Article

We present optically tunable metamaterials (MMs) on flexible polymer sheets operating at terahertz (THz) frequencies. The flexible MMs, consisting of electric split-ring resonators (eSRRs) on patterned GaAs patches, were fabricated on a thin polyimide layer using a transfer technique. Optical excitation of the GaAs patches modifies the metamaterial response. Our experimental results revealed that, with increasing fluence, a transmission modulation depth of ∼ 60% was achieved at the LC resonant frequency of 0.98 THz. In addition, a similar modulation depth was obtained over a broad range from 1.1 to 1.8 THz. Numerical simulations agree with experiment and indicate efficient tuning of the effective permittivity of the MMs. Our flexible tunable device paves the way to create multilayer nonplanar tunable electromagnetic composites for nonlinear and multifunctional applications, including sensing, modulation, and energy harvesting. © 2011-2012 IEEE.

Full Text

Cited Authors

  • Fan, K; Zhao, X; Zhang, J; Geng, K; Keiser, GR; Seren, HR; Metcalfe, GD; Wraback, M; Zhang, X; Averitt, RD

Published Date

  • November 1, 2013

Published In

Volume / Issue

  • 3 / 6

Start / End Page

  • 702 - 708

International Standard Serial Number (ISSN)

  • 2156-342X

Digital Object Identifier (DOI)

  • 10.1109/TTHZ.2013.2285619

Citation Source

  • Scopus