Optical properties of metal films in insulator/metal/insulator systems

Афанасьев К.Н., Бондарь Е.А., Седова М.В., Шадрина Л.П. Оптические свойства металлических слоев в системах диэлектрик/металл/диэлектрик // Оптический журнал. 2007. Т. 74. № 5. С. 82–86.

Afanasiev K.N., Bondar E.A., Sedova M.V., Shadrina L.P. Optical properties of metal films in insulator/metal/insulator systems [in Russian] // Opticheskii Zhurnal. 2007. V. 74. № 5. P. 82–86.

K. N. Afanas’ev, E. A. Bondar’, M. V. Sedova, and L. P. Shadrina, "Optical properties of metal films in insulator/metal/insulator systems," Journal of Optical Technology. 74 (5), 368-371 (2007). https://doi.org/10.1364/JOT.74.000368

Using as an example SiO₂/Cu/SiO₂ and Al₂O₃/Cu/Al₂O₃ coatings in the wavelength range λ =0.35-2.5 μm, the optical properties of the metal layers in three-layer insulator/metal/insulator systems have been studied. The indicated coatings are obtained by the method of layer-by-layer electron-beam sputtering on silicate glass. The dispersion dependences of the refractive index n and absorption index k of the intermediate copper layer in SiO₂/Cu/SiO₂ and Al₂ O₃/Cu/Al₂O₃ coatings is determined for the first time, using a computational matrix method to calculate the optical constants (n and k) of the separate layers that make up the layered system. It is shown that the properties of the metal films in the coatings under consideration are mainly determined by microstructural effects.