Optical Excitation of Surface Plasmon Polariton in Thin Gold, silver and Copper Metal Layers and Measuring the Metal Layer

journal of Artificial Intelligence in Electrical Engineering

دوره 10، شماره 40، خرداد 2022، صفحه 9-14   

نوع مقاله: Original Article

نویسنده

Behnam Kazempour^*

Department of Physics, Ahar Branch, Islamic Azad University, Ahar, Iran

چکیده

In this paper, we employed the attenuated total reflection (ATR) technique to theoretically and experimentally measure the thickness of metal thin films and compare together them. The computations of the present study were carried out using characteristics matrix method. The ATR technique is based on the excitation of surface polaritons. In the ATR spectra polariton, the surface polaritons manifest themselves as sharp reflectivity minima. We used this minimum to measure the thickness of a silver layer coated on the surface of a prism. We observed that the measured value has a good agreement with the real thickness of the layer.

کلیدواژه‌ها

Attenuated Total Reflectance (ATR)؛ Reflection spectrum؛ Surface Polaritons؛ Surface Waves؛ Transfer Matrix