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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 28664–28671

A new class of electrically tunable metamaterial terahertz modulators

Rusen Yan, Berardi Sensale-Rodriguez, Lei Liu, Debdeep Jena, and Huili Grace Xing  »View Author Affiliations


Optics Express, Vol. 20, Issue 27, pp. 28664-28671 (2012)
http://dx.doi.org/10.1364/OE.20.028664


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Abstract

Switchable metamaterials offer unique solutions for efficiently manipulating electromagnetic waves, particularly for terahertz waves, which has been difficult since naturally occurring materials rarely respond to terahertz frequencies controllably. However, few terahertz modulators demonstrated to date exhibit simultaneously low attenuation and high modulation depth. In this letter we propose a new class of electrically-tunable terahertz metamaterial modulators employing metallic frequency-selective-surfaces (FSS) in conjunction with capacitively-tunable layers of electrons, promising near 100% modulation depth and < 15% attenuation. The fundamental departure in our design from the prior art is tuning enabled by self-gated electron layers that is independent from the metallic FSS. Our proposal is applicable to all possible electrically tunable elements including graphene, Si, MoS2, oxides etc, thus opening up myriad opportunities for realizing high performance switchable metamaterials over an ultra-wide terahertz frequency range.

© 2012 OSA

OCIS Codes
(040.2235) Detectors : Far infrared or terahertz
(160.3918) Materials : Metamaterials
(250.4110) Optoelectronics : Modulators

ToC Category:
Metamaterials

History
Original Manuscript: September 14, 2012
Revised Manuscript: November 18, 2012
Manuscript Accepted: November 26, 2012
Published: December 10, 2012

Citation
Rusen Yan, Berardi Sensale-Rodriguez, Lei Liu, Debdeep Jena, and Huili Grace Xing, "A new class of electrically tunable metamaterial terahertz modulators," Opt. Express 20, 28664-28671 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-27-28664


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