An efficient wideband numerical simulation technique for nanostructures comprised of DCP media

This work presents an efficient time domain numerical approach to simulate the wideband response of Drude-critical point (DCP) media. Based on previous research and development of the Discontinuous Galerkin Time Domain (DGTD) method, this approach applies the collocated E-J scheme to discretize the electric fields and polarization currents. A hybridization of the Runge-Kutta and Newmark methods is also proposed to solve the associated first-order and second-order temporal auxiliary differential equations. The effectiveness and efficiency of this new approach is validated through comparison with commercial software.