title: Optically thin composite resonant absorber at the near-infrared band: a polarization independent and spectrally broadband configuration.
abstract: We designed, fabricated, and experimentally characterized thin absorbers utilizing both electrical and magnetic impedance matching at the near-infrared regime. The absorbers consist of four main layers: a metal back plate, dielectric spacer, and two artificial layers. One of the artificial layers provides electrical resonance and the other one provides magnetic resonance yielding a polarization independent broadband perfect absorption. The structure response remains similar for the wide angle of incidence due to the sub-wavelength unit cell size of the constituting artificial layers. The design is useful for applications such as thermal photovoltaics, sensors, and camouflage.
authors.affiliation: Nanotechnology Research Center, Bilkent University, Bilkent, 06800 Ankara, Turkey. boratay@bilkent.edu.tr
authors.forename: Kamil Boratay
authors.initials: KB
authors.lastname: Alici
authors.forename: Adil Burak
authors.initials: AB
authors.lastname: Turhan
authors.forename: Costas M
authors.initials: CM
authors.lastname: Soukoulis
authors.forename: Ekmel
authors.initials: E
authors.lastname: Ozbay