Document Type : Original Article
Author
Teacher assistant
Abstract
In this study, the phase properties of graphene-based hyperbolic metamaterial slab have been investigated. Initially, we the transmission spectrum of this structure has been calculated and it was shown the presence of two photonic band gaps that depend on the polarization and incident angle. Next, we determine the phase and phase difference between transverse electric (TE) and transverse magnetic (TM) waves under different incident angles. The results show that there is no phase difference between these polarized waves under normal incidence, indicating isotropic behavior of the structure. However, for non-zero incident angles, a significant phase difference ( ) emerges at the edge of the first photonic bandgap, particularly in the frequency range close to 10 THz. This observed phase difference suggests that the aforementioned structure can be effectively employed in designing half-wave plates within this frequency range. Additionally, we demonstrate that the intensity and working frequency of the designed half-wave plate can be controlled by adjusting the angle of incident light.
)