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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1179–1181

Infrared perfect absorber based on nanowire metamaterial cavities

Yingran He, Huixu Deng, Xiangyang Jiao, Sailing He, Jie Gao, and Xiaodong Yang  »View Author Affiliations

Optics Letters, Vol. 38, Issue 7, pp. 1179-1181 (2013)

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An infrared perfect absorber based on a gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in an alumina host exhibits an effective permittivity with strong anisotropy, which supports cavity resonant modes of both electric dipole and magnetic dipole. The impedance of the cavity modes matches the incident plane wave in free space, leading to nearly perfect light absorption. The incident optical energy is efficiently converted into heat so that the local temperature of the absorber will increase. Results show that the designed absorber is polarization-insensitive and nearly omnidirectional for the incident angle.

© 2013 Optical Society of America

OCIS Codes
(300.1030) Spectroscopy : Absorption
(300.6340) Spectroscopy : Spectroscopy, infrared
(160.3918) Materials : Metamaterials
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:

Original Manuscript: January 7, 2013
Revised Manuscript: February 27, 2013
Manuscript Accepted: March 1, 2013
Published: April 1, 2013

Yingran He, Huixu Deng, Xiangyang Jiao, Sailing He, Jie Gao, and Xiaodong Yang, "Infrared perfect absorber based on nanowire metamaterial cavities," Opt. Lett. 38, 1179-1181 (2013)

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