Anderson localization in disordered multilayered structures composed of plasma layers with modulated sinusoidal densities

In this paper, we propose two random multilayered structures consisting of plasma layers with modulated sinusoidal densities. The first structure consists of equi-thickness plasma layers with random initial plasma densities. In the second suggested structure, the initial plasma densities of all layers are the same, while their thicknesses are randomly selected from a uniform distribution. It is demonstrated that, for both structures, Anderson localization enhances with an increase in the modulation factor. In addition, the localization length decreases with an increase in the disorder level due to the enhancement of multiscattering through the structure. For both TE and transverse magnetic polarizations, by increasing the incident angle, the frequency range at which localization occurs becomes broader. Furthermore, we find that the attenuation length decreases with an increase in the collision frequency because of absorption enhancement through the structure. Finally, by the introduction of randomness in both initial plasma density and thickness of plasma layers, stronger localization is obtained in some frequency ranges.