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Wideband perfect light absorber at midwave infrared using multiplexed metal structures

  • Joshua Hendrickson
  • , Junpeng Guo
  • , Boyang Zhang
  • , Walter Buchwald
  • , Richard Soref
  • Air Force Research Laboratory
  • University of Alabama in Huntsville
  • Solid State Scientific Corporation
  • University of Massachusetts Boston

Research output: Contribution to journalArticlepeer-review

Abstract

We experimentally demonstrate a wideband near-perfect light absorber in the midwave IR region using a multiplexed plasmonic metal structure. The wideband near-perfect light absorber is made of two different size gold metal squares multiplexed on a thin dielectric spacing layer on top of a thick metal layer in each unit cell. We also fabricate regular nonmultiplexed structure perfect light absorbers. The multiplexed structure IR absorber absorbs more than 98% of the incident light over a much wider spectral band than regular nonmultiplexed structure perfect light absorbers in the midwave IR region.

Original languageEnglish
Pages (from-to)371-373
Number of pages3
JournalOptics Letters
Volume37
Issue number3
DOIs
StatePublished - Feb 1 2012

ASJC Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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