Linear and Nonlinear Terahertz Three-Dimensional Dirac Nano-Plasmonic Waveguides

Graphene's exceptional features in electronics and optics are asserted to manifest in its "two-dimensional (2-D) Dirac" nature. However, good integration of graphene with current optical materials seems elusive due to its thin film structure, and its delicate 2-D optical properties may be destroyed in the integration process. Here, three-dimensional (3-D) Dirac materials like cadmium arsenide may be a good contender as a graphene plasmonics substitute. We compare and contrast the optical properties of 3-D Dirac materials with graphene in this paper. 3-D Dirac materials has the potential to become the cornerstone for Internet-of-Things device applications.