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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 19 — Jul. 1, 2013
  • pp: 4536–4540

Polarization-independent dual-band terahertz metamaterial absorbers based on gold/parylene-C/silicide structure

Yongzheng Wen, Wei Ma, Joe Bailey, Guy Matmon, Xiaomei Yu, and Gabriel Aeppli  »View Author Affiliations


Applied Optics, Vol. 52, Issue 19, pp. 4536-4540 (2013)
http://dx.doi.org/10.1364/AO.52.004536


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Abstract

We design, fabricate, and characterize dual-band terahertz (THz) metamaterial absorbers with high absorption based on structures consisting of a cobalt silicide (Co-Si) ground plane, a parylene-C dielectric spacer, and a metal top layer. By combining two periodic metal resonators that couple separately within a single unit cell, a polarization-independent absorber with two distinct absorption peaks was obtained. By varying the thickness of the dielectric layer, we obtain absorptivity of 0.76 at 0.76 THz and 0.97 at 2.30 THz, which indicates the Co-Si ground plane absorbers present good performance.

© 2013 Optical Society of America

OCIS Codes
(300.1030) Spectroscopy : Absorption
(040.2235) Detectors : Far infrared or terahertz
(160.3918) Materials : Metamaterials

ToC Category:
Materials

History
Original Manuscript: April 23, 2013
Manuscript Accepted: May 19, 2013
Published: June 25, 2013

Citation
Yongzheng Wen, Wei Ma, Joe Bailey, Guy Matmon, Xiaomei Yu, and Gabriel Aeppli, "Polarization-independent dual-band terahertz metamaterial absorbers based on gold/parylene-C/silicide structure," Appl. Opt. 52, 4536-4540 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-19-4536


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