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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 20307–20312

A close-ring pair terahertz metamaterial resonating at normal incidence

Jianqiang Gu, Jiaguang Han, Xinchao Lu, Ranjan Singh, Zhen Tian, Qirong Xing, and Weili Zhang  »View Author Affiliations


Optics Express, Vol. 17, Issue 22, pp. 20307-20312 (2009)
http://dx.doi.org/10.1364/OE.17.020307


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Abstract

We present a systematic study of a close-ring pair based freestanding metamaterial fabricated by double-layer, self-aligned photolithography. Terahertz time-domain spectroscopy transmission measurements and numerical simulations have revealed negative index of refraction in the frequency range of 0.66-0.90 THz under normal wave incidence. The observed resonance behaviors can be well explained by a theoretical circuit model. The electromagnetic properties and the figure of merit of such close-ring metamaterials are also explored in terms of geometrical parameters of the unit cell with a goal of providing optimized design for three-dimensional metamaterials and potential device applications.

© 2009 OSA

OCIS Codes
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials

ToC Category:
Metamaterials

History
Original Manuscript: September 8, 2009
Revised Manuscript: October 19, 2009
Manuscript Accepted: October 19, 2009
Published: October 22, 2009

Citation
Jianqiang Gu, Jiaguang Han, Xinchao Lu, Ranjan Singh, Zhen Tian, Qirong Xing, and Weili Zhang, "A close-ring pair terahertz metamaterial resonating at normal incidence," Opt. Express 17, 20307-20312 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-22-20307


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