TITLE

Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves

AUTHOR(S)
Hou-Tong Chen; Palit, Sabarni; Tyler, Talmage; Bingham, Christopher M.; Zide, Joshua M. O.; O'Hara, John F.; Smith, David R.; Gossard, Arthur C.; Averitt, Richard D.; Padilla, Willie J.; Jokerst, Nan M.; Taylor, Antoinette J.
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p091117
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
34360678

 

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