Development of numerical simulation platform of micro-structured photoconductive antenna based on full-wave FDTD

In order to display the terahertz (THz) radiation performance of the micro-structured photoconductive antenna (PCA) as true and accurate as possible, and the development of the numerical simulation platform for THz signals is reported in this paper. The numerical simulation platform with the full-wave finite-difference time-domain (FDTD) method in three-dimension (3D) that couples multi-physics together is capable of getting the THz radiation spectrum. And then the numerical simulation platform were well verified by the fact that the numerical simulation calculations provided very good agreement with the simulation and experimental results with Si-GaAs as the substrate material in the relevant reference. The results in this paper will be of significantly important to the design and analysis of the radiation performance of PCA with different micro-structures in the future.