Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves

Journal Article

We demonstrate fast electrical modulation of freely propagating terahertz waves at room temperature using hybrid metamaterial devices. The devices are planar metamaterials fabricated on doped semiconductor epitaxial layers, which form hybrid metamaterial-Schottky diode structures. With an applied ac voltage bias, we show modulation of terahertz radiation at inferred frequencies over 2 MHz. The modulation speed is limited by the device depletion capacitance which may be reduced for even faster operation. © 2008 American Institute of Physics.

Full Text

Published version (via Digital Object Identifier)

Duke Authors

Cited Authors

Chen, H-T; Palit, S; Tyler, T; Bingham, CM; Zide, JMO; O'Hara, JF; Smith, DR; Gossard, AC; Averitt, RD; Padilla, WJ; Jokerst, NM; Taylor, AJ

Published Date

2008

Published In

Applied Physics Letters

Volume / Issue

93 / 9

International Standard Serial Number (ISSN)

0003-6951

Digital Object Identifier (DOI)

10.1063/1.2978071