Dispersive characteristics of surface plasmon polaritons on negative refractive index gratings

作者：Cuevas M^*; Depine R A

来源：Optics Communications, 2011, 284(22): 5242-5247.

DOI：10.1016/j.optcom.2011.07.034

• Surface polaritons
• Plasmonics
• Diffraction
• Grating
• Negative refraction
• Metamaterials

The dispersive characteristics of surface plasmon polaritons (SPPs) supported by a periodically corrugated boundary between vacuum and a negative refractive index, isotropic material were studied theoretically by numerical solution of a dispersion equation. SPP dispersion curves were correlated with the optical response of the corrugated boundary in frequency regions where SPPs can be excited by a normally incident plane wave. Abrupt reflectivity variations, characterized by the presence of a near unity maximum and an almost zero minimum, were found in regions where the boundary without corrugation exhibits low reflectivity and rather featureless reflectivity curves.

• 出版日期2011-10-15