Abstract
In this work, we have presented the deep insight of Goos–Hänchen shift depending upon the temperature when a plane incident electromagnetic beam of light enters from a rare to a denser medium, keeping conditions of total internal reflection intact. A simple well known Drude’s model has been used for the purpose of thermal analysis of this shift. Through this model, the temperature-dependent permittivity of absorbing or complex medium has been found through the temperature-dependent plasma and damping wavelengths. Both transverse electric and magnetic incident electromagnetic fields have been considered in this regard. On an air–metal interface, firstly, Goos–Hänchen shift has been found when a temperature-independent dielectric function of a complex medium has been considered, and secondly, by analyzing the temperature-dependent dielectric function in the simplest way by using the stationary-phase method. This study is useful to understand the behavior of Goos–Hänchen shift around the temperature-dependency of the medium and how the angle of incidence impacts in this scenario.
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