Tunable polaritonic metasurface absorbers in mid-IR based on hexagonal boron nitride and vanadium dioxide layers

Xianglian Song, Zizhuo Liu, Jacob Scheuer, Yuanjiang Xiang, Koray Aydin

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Here, a metasurface absorber with switchable spectral response is proposed and discussed. The device is constructed by combining a phase change material (vanadium dioxide, VO 2 ) and a naturally hyperbolic materials (hexagonal boron nitride, hBN), utilizing surface plasmon polaritons (SPPs) and surface phonon polaritons (SPhPs), respectively, at different thermal conditions in the same system. Specifically, we take advantage of the excitation of SPhP in hBN below the VO 2 critical temperature (T < T c ) and SPP from VO 2 layers at higher temperatures (T > T c ), to switch between narrow-band near-perfect absorption at ∼7.2 μm to broadband absorption at 8-12 μm. It is shown that SPPs and SPhPs can be excited, respectively, by controlling the temperature, offering new opportunities in designing tunable artificial materials and devices for promising nanophotonics applications.

Original languageEnglish (US)
Article number164002
JournalJournal of Physics D: Applied Physics
Volume52
Issue number16
DOIs
StatePublished - Jan 1 2019

Keywords

  • Tunable metasurface absorber
  • hexagonal boron nitride
  • suface plasmon polaritons
  • surface phonon polaritons
  • vanadium dioxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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