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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 16745–16749

Mixed plasmons coupling for expanding the bandwidth of near-perfect absorption at visible frequencies

Chenggang Hu, Liyuan Liu, Zeyu Zhao, Xu’nan Chen, and Xiangang Luo  »View Author Affiliations

Optics Express, Vol. 17, Issue 19, pp. 16745-16749 (2009)

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We theoretically investigate the electromagnetic response of mixed-size sub-wavelength square hole array (M-SHA) combined with thick metal layer (TML). Near-perfect absorption with bandwidth about 17nm is firstly observed. Field distribution and dispersion relationship indicate that mixed surface plasmons (M-SPs) coupling is supported by M-SHA and TML. The absorption band is proved to be dominated by M-SPs coupling.

© 2009 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: June 16, 2009
Revised Manuscript: August 17, 2009
Manuscript Accepted: August 30, 2009
Published: September 4, 2009

Chenggang Hu, Liyuan Liu, Zeyu Zhao, Xu’nan Chen, and Xiangang Luo, "Mixed plasmons coupling for expanding the bandwidth of near-perfect absorption at visible frequencies," Opt. Express 17, 16745-16749 (2009)

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