Two-dimensional reconfigurable gradient index memory metasurface

Abstract

Creation and control of spatial gradients in electromagnetic properties is a central theme underlying optical device design. In this work, we demonstrate that through modification of the spatial and temporal distribution of current, we can obtain increased control over the shape of these gradients. We are able to write spatially sharp gradients with ∼50% change in the index of refraction over length scales of only a few wavelengths as observed through diffraction limited terahertz spectroscopy. Furthermore, we assess the potentials for such gradients for beam-steering applications. © 2013 AIP Publishing LLC.

DOI
10.1063/1.4809534
Year
Chicago Citation
Goldflam, M. D., T. Driscoll, D. Barnas, O. Khatib, M. Royal, N. Marie Jokerst, D. R. Smith, et al. “Two-dimensional reconfigurable gradient index memory metasurface.” Applied Physics Letters 102, no. 22 (June 3, 2013). https://doi.org/10.1063/1.4809534.