Graphene metamaterial modulator for free-space thermal radiation.


Journal Article

We proposed and demonstrated a new metamaterial architecture capable of high speed modulation of free-space space thermal infrared radiation using graphene. Our design completely eliminates channel resistance, thereby maximizing the electrostatic modulation speed, while at the same time effectively modulating infrared radiation. Experiment results verify that our device with area of 100 × 120 µm2 can achieve a modulation speed as high as 2.6 GHz. We further highlight the utility of our graphene metamaterial modulator by reconstructing a fast infrared signal using an equivalent time sampling technique. The graphene metamaterial modulator demonstrated here is not only limited to the thermal infrared, but may be scaled to longer infrared and terahertz wavelengths. Our work provides a path forward for realization of frequency selective and all-electronic high speed devices for infrared applications.

Full Text

Duke Authors

Cited Authors

  • Fan, K; Suen, J; Wu, X; Padilla, WJ

Published Date

  • October 2016

Published In

Volume / Issue

  • 24 / 22

Start / End Page

  • 25189 - 25201

PubMed ID

  • 27828457

Pubmed Central ID

  • 27828457

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.24.025189


  • eng