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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 15 — Jul. 21, 2008
  • pp: 11328–11336

Coherent thermal emission by excitation of magnetic polaritons between periodic strips and a metallic film

B. J. Lee, L. P. Wang, and Z. M. Zhang  »View Author Affiliations

Optics Express, Vol. 16, Issue 15, pp. 11328-11336 (2008)

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The present paper theoretically demonstrates coherent thermal emission in the infrared region by exciting magnetic polaritons between metallic gratings and an opaque metallic film, separated by a dielectric spacer. The coupling of the metallic strips and the film induces a magnetic response that is characterized by a negative permeability and positive permittivity. On the other hand, the metallic film intrinsically exhibits a negative permittivity and positive permeability in the near infrared. This artificial structure is equivalent to a pair of single-negative materials. By exciting surface magnetic polaritons, large emissivity peaks can be achieved at the resonance frequencies and are almost independent of the emission angle. The resonance frequency of the magnetic response can be predicted by an analogy to an inductor and capacitor circuit. The proposed structure can be easily constructed using micro/nanofabrication.

© 2008 Optical Society of America

OCIS Codes
(240.5420) Optics at surfaces : Polaritons
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials

ToC Category:
Optics at Surfaces

Original Manuscript: May 30, 2008
Revised Manuscript: July 10, 2008
Manuscript Accepted: July 10, 2008
Published: July 14, 2008

B. J. Lee, L. P. Wang, and Z. M. Zhang, "Coherent thermal emission by excitation of magnetic polaritons between periodic strips and a metallic film," Opt. Express 16, 11328-11336 (2008)

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