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Opt Lett. 2014 May 1;39(9):2637-40. doi: 10.1364/OL.39.002637.

Nearly perfect resonant absorption of TE-polarized light at metal surfaces coated with arrayed dielectric stripes.

Abstract

A quasi-transverse electric (TE) surface wave mode exists at a metal surface coated with an ultrathin high-index dielectric layer. As the coating is in dielectric stripe arrays, nearly perfect absorption of TE-polarized incidence light is observed in simulations, due to resonances of the quasi-surface waves at each segment of the dielectric-coated metal surfaces. In analysis, the Fabry-Perot-like nature of the resonances is clarified, and effects of symmetry on different behaviors of the odd- and even-order resonance modes are discussed. While the absorption peak is tunable, perfect absorption appears near cut-off wavelength of the surface mode.

PMID:
24784065
[PubMed - in process]
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