External modulators for TeraHertz Quantum Cascade Lasers based on electrically-driven active metamaterials


Journal Article

We have designed, fabricated and measured electrically-driven active metamaterials which operate as external modulators for TeraHertz Quantum Cascade Lasers. The modulation is achieved by applying a voltage to the metamaterial layer which actively displaces carriers from the n-doped layer causing changes in damping and frequency location of the lowest metamaterial response. We demonstrate their operation at 2.4 and 2.8. TeraHertz and obtain a maximum modulation depth of ∼60% with a large degree of modulation linearity. © 2010 Elsevier B.V.

Full Text

Duke Authors

Cited Authors

  • Peralta, XG; Brener, I; Padilla, WJ; Young, EW; Hoffman, AJ; Cich, MJ; Averitt, RD; Wanke, MC; Wright, JB; Chen, HT; O'Hara, JF; Taylor, AJ; Waldman, J; Goodhue, WD; Li, J; Reno, J

Published Date

  • August 1, 2010

Published In

Volume / Issue

  • 4 / 2-3

Start / End Page

  • 83 - 88

International Standard Serial Number (ISSN)

  • 1873-1988

Digital Object Identifier (DOI)

  • 10.1016/j.metmat.2010.04.005

Citation Source

  • Scopus