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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4643–4646

Continuously tuning effective refractive index based on thermally controllable magnetic metamaterials

Xinning Yu, Huajin Chen, Haixiao Lin, Jialin Zhou, Jingjing Yu, Chunxiu Qian, and Shiyang Liu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 16, pp. 4643-4646 (2014)
http://dx.doi.org/10.1364/OL.39.004643


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Abstract

By employing a thermally active magnetic material, we theoretically design a kind of electromagnetic metamaterial with intrinsic magnetic response, termed magnetic metamaterial (MM). The retrieved effective electric permittivity εeff and magnetic permeability μeff exhibit a nearly continuous transition from double negative to double zero, and then to double positive by controlling the temperature, indicating a flexible tunability of the effective refractive index. The beam splitting, collimation, focusing, and total reflection are achieved at different typical temperatures. Most importantly, with the MM implemented under a gradient temperature, a gradient negative-zero-positive index metamaterial (NZPIM) can possibly be realized, thus providing a new platform to study wave features in NZPIM.

© 2014 Optical Society of America

OCIS Codes
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:
Materials

History
Original Manuscript: May 12, 2014
Revised Manuscript: June 28, 2014
Manuscript Accepted: July 1, 2014
Published: August 4, 2014

Citation
Xinning Yu, Huajin Chen, Haixiao Lin, Jialin Zhou, Jingjing Yu, Chunxiu Qian, and Shiyang Liu, "Continuously tuning effective refractive index based on thermally controllable magnetic metamaterials," Opt. Lett. 39, 4643-4646 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-16-4643

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