Role of surface electromagnetic waves in metamaterial absorbers.

Published

Journal Article

Metamaterial absorbers have been demonstrated across much of the electromagnetic spectrum and exhibit both broad and narrow-band absorption for normally incident radiation. Absorption diminishes for increasing angles of incidence and transverse electric polarization falls off much more rapidly than transverse magnetic. We unambiguously demonstrate that broad-angle TM behavior cannot be associated with periodicity, but rather is due to coupling with a surface electromagnetic mode that is both supported by, and well described via the effective optical constants of the metamaterial where we achieve a resonant wavelength that is 19.1 times larger than the unit cell. Experimental results are supported by simulations and we highlight the potential to modify the angular response of absorbers by tailoring the surface wave.

Full Text

Duke Authors

Cited Authors

  • Chen, W-C; Cardin, A; Koirala, M; Liu, X; Tyler, T; West, KG; Bingham, CM; Starr, T; Starr, AF; Jokerst, NM; Padilla, WJ

Published Date

  • March 2016

Published In

Volume / Issue

  • 24 / 6

Start / End Page

  • 6783 - 6792

PubMed ID

  • 27136864

Pubmed Central ID

  • 27136864

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.24.006783

Language

  • eng