Surface shape resonances in lamellar metallic gratings

T. Lopez-Rios, D. Mendoza, F. J. Garcia-Vidal +3

The specular reflectivity of lamellar gratings of gold with grooves 0.5 microns wide separated by a distance of 3.5 microns was measured on the 2000 cm${}^{-1}$ - 7000 cm${}^{-1}$ spec…