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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 5 — Mar. 1, 2012
  • pp: 960–962

Terahertz photonic states in semiconductor–graphene cylinder structures

Yizhe Yuan, Jianquan Yao, and Wen Xu  »View Author Affiliations


Optics Letters, Vol. 37, Issue 5, pp. 960-962 (2012)
http://dx.doi.org/10.1364/OL.37.000960


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Abstract

We propose a semiconductor–graphene cylinder that can serve as a terahertz (THz) photonic crystal. In such a structure, graphene plays a role in achieving a strong mismatch of the dielectric constant at the semiconductor–graphene interface due to its two-dimensional nature and relatively low value of the dielectric constant. We find that when the radius of the outer semiconductor layer is about ρ1100μm, the frequencies of the photonic modes are within the THz bandwidth and they can be efficiently tuned via varying ρ1. Furthermore, the dispersion relation of the photonic modes shows that a semiconductor–graphene cylinder is of excellent light transport properties, which can be utilized for the THz waveguide. This study is pertinent to the application of graphene as THz photonic devices.

© 2012 Optical Society of America

OCIS Codes
(220.4610) Optical design and fabrication : Optical fabrication
(230.7370) Optical devices : Waveguides
(350.5500) Other areas of optics : Propagation
(160.4236) Materials : Nanomaterials
(160.5298) Materials : Photonic crystals
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Optoelectronics

History
Original Manuscript: December 14, 2011
Manuscript Accepted: January 7, 2012
Published: February 29, 2012

Citation
Yizhe Yuan, Jianquan Yao, and Wen Xu, "Terahertz photonic states in semiconductor–graphene cylinder structures," Opt. Lett. 37, 960-962 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-5-960


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