Optically thin composite resonant absorber at the near-infrared band: a polarization independent and spectrally broadband configuration
Alici, K. B.
Turhan, A. B.
Soukoulis, C. M.
Optical Society of America
Alici, K. B., Turhan, A. B., Soukoulis, C. M., & Ozbay, E. (2011). Optically thin composite resonant absorber at the near-infrared band: a polarization independent and spectrally broadband configuration. Optics express, 19(15), 14260-14267.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/12111
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. (C)2011 Optical Society of America