Research of the nonuniform layers by a reflectometry method near the Brewster's angle

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Shagaev, V.V.^1

Bauman Moscow State Technical University, Kaluga Branch, Russia^1

关键词: Brewster's angle;    Implanted layers;    Inhomogeneity indicators;    Logarithmic derivatives;    Non-uniform layer;    Sharp boundaries;    Transition layers;    Transparent media;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012030/pdf
DOI  :  10.1088/1757-899X/168/1/012030

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The mathematical model of the electromagnetic wave reflection with p-polarization from the non-sharp boundary between two transparent media is built and studied. The feature of the model consisted in the fact that the thickness of the transition layer was much less than the electromagnetic wave length. The analytical ratio expressing the reflection coefficient through the coordinate dependence of permittivity is deduced. It is shown that the logarithmic derivative from the reflection coefficient with respect to angle can be used as the inhomogeneity indicator. The interval of the angles located near the Brewster's angle is the most informative in this case. The developed theoretical representations are illustrated by calculations executed for the terahertz range wave reflection from an implanted layer.