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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3539–3542

Dual-mode electromagnetically induced transparency and slow light in a terahertz metamaterial

Kun Zhang, Cheng Wang, Ling Qin, Ru-Wen Peng, Di-Hu Xu, Xiang Xiong, and Mu Wang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 12, pp. 3539-3542 (2014)

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In this Letter, we construct a metamaterial with dual-mode electromagnetically induced transparency (EIT)-like behavior by introducing “bright atoms,” “quasi-dark atoms,” and “dark atoms” simultaneously. The dual-mode EIT-like behavior has been demonstrated both experimentally and theoretically in terahertz (THz) regime. At two EIT-like modes, slow light is also observed as two time-delayed wave packets, and the effective group refractive index can reach 102. Furthermore, stable dual-mode EIT-like behavior is verified in this metamaterial for a wide range of oblique incident angles. Our work provides a design approach to mimic dual-mode EIT, and such an approach may achieve potential applications on miniaturized and versatile THz devices.

© 2014 Optical Society of America

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(040.2235) Detectors : Far infrared or terahertz
(160.3918) Materials : Metamaterials
(230.4555) Optical devices : Coupled resonators

ToC Category:

Original Manuscript: March 10, 2014
Revised Manuscript: May 1, 2014
Manuscript Accepted: May 1, 2014
Published: June 9, 2014

Kun Zhang, Cheng Wang, Ling Qin, Ru-Wen Peng, Di-Hu Xu, Xiang Xiong, and Mu Wang, "Dual-mode electromagnetically induced transparency and slow light in a terahertz metamaterial," Opt. Lett. 39, 3539-3542 (2014)

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