BROWSE

Related Researcher

Author's Photo

Jun, Young Chul
Laboratory of Nanophotonics & Metamaterials (NanoMeta)
Research Interests
  • Nanophotonics, plasmonics, metamaterials, 4D printing, programmable matter, smart materials

ITEM VIEW & DOWNLOAD

Electrically tunable infrared metamaterials based on depletion-type semiconductor devices

Cited 7 times inthomson ciCited 7 times inthomson ci
Title
Electrically tunable infrared metamaterials based on depletion-type semiconductor devices
Author
Jun, Young ChulBrener, Igal
Keywords
tunable metamaterials, active infrared devices, optoelectronics
Issue Date
2012-11
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF OPTICS, v.14, no.11, pp. -
Abstract
We present the theory and experimental demonstration of electrically tunable mid-infrared metamaterials based on depletion-type semiconductor devices. Planar metamaterials consisting of interconnected gold split-ring resonator arrays are fabricated on top of highly doped III-V semiconductors. These arrays work both as an optical metamaterial layer and electrical metal gate simultaneously. The depletion width in the n-doped semiconductor epilayer changes with the electric gate bias, inducing a change of the permittivity of the substrate and leading to frequency tuning of the metamaterial resonance. We first present our device structure and measurement data. Then we provide a detailed theoretical analysis of electrical tuning and we study how semiconductor materials and metamaterial designs affect electrical tunability. We also discuss possible ways to improve tunability even further. This active tuning is generally applicable to a variety of infrared metamaterials and plasmonic structures, which can lead to novel applications in chip-scale infrared optoelectronic devices
URI
Go to Link
DOI
10.1088/2040-8978/14/11/114013
ISSN
2040-8978
Appears in Collections:
MSE_Journal Papers
Files in This Item:
pdf.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU