Tunable wide-angle plasmonic perfect absorber at visible frequencies

Zheyu Fang, Yu-Rong Zhen, Linran Fan, Xing Zhu, and Peter Nordlander
Phys. Rev. B 85, 245401 – Published 1 June 2012

Abstract

We report a perfect absorber metallic hole array with wide-angle near unity absorbance in the visible regime. The periodicity of the structure enables excitation of surface-plasmon polaritons and results in a splitting of the absorbing peaks. An analytical formalism based on perturbation theory provides results in good agreement with experimental data and shows how the absorption peak can be tuned with hole geometry, periodicity, and material parameters. Being extendable to more complex hybrid structures, our result is important for the development of photon harvesting devices and thermal emitters.

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  • Received 4 March 2012

DOI:https://doi.org/10.1103/PhysRevB.85.245401

©2012 American Physical Society

Authors & Affiliations

Zheyu Fang1,2,3,*, Yu-Rong Zhen2,*, Linran Fan3, Xing Zhu3,4,†, and Peter Nordlander1,2,‡

  • 1Department of Electrical and Computer Engineering, and Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, USA
  • 2Department of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, USA
  • 3School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China
  • 4National Center for Nanoscience and Technology, Beijing 100190, China

  • *Equal contribution authors.
  • zhuxing@pku.edu.cn.
  • nordland@rice.edu.

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Issue

Vol. 85, Iss. 24 — 15 June 2012

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