Geodesic
Method for determining optical constants and the thickness of the thin film
Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ, Tome 13 (2017) no. 1, pp. 17-26 Cet article a éte moissonné depuis la source Math-Net.Ru

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Here are presented the results of the development and application of methods for determining the optical constants and thickness of thin films. The generalized target model function is formed to determine the unmeasured parameters. The model is applied by using the least squares method and the steepest descent. Increased efficiency is achieved by using a three-step processing algorithm. The proposed method was applied to calculate the characteristics of the multi-alkali photocathode, which is a complex compound having in its composition antimonides of potassium, sodium and cesium. A comparison of the calculation results with the data given in the literature is presented. Refs 11. Figs 4.
Keywords: thin film, optical constants, the thickness of the thin film, the generalized target model function, the data processing algorithm. 
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A. G. Karpov; V. A. Klemeshev. Method for determining optical constants and the thickness of the thin film. Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ, Tome 13 (2017) no. 1, pp. 17-26. http://geodesic.mathdoc.fr/item/VSPUI_2017_13_1_a1/

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