The spectral dependencies of reflectance (
) and the spectra of light transmittance. The spectral dependencies of R
p at near-normal incidence (10°) of light on GaAs with flat surface (a) and with surface microrelief of quasigrating type (b) before (1) and after (2) Au nanoparticles deposition. (c) The spectra of the light transmittance through the layer of aqueous suspension of Ag NP (1) and the ratio of light transmittance through Au/Ag NP/glass and Au/glass structures with Au layer thickness of 30 nm (2).