Advanced Computational Electromagnetics to Model Metamaterial and Plasmonic Devices
Recently, we have proposed an efficient Finite-Difference Time-Domain (FDTD) method to model complicated metamaterial structures based on transformation electromagnetics and plasmonics, which are anisotropic, dispersive and inhomogeneous media. The FDTD code can be extended to accurately model active and nonlinear metamaterial and plasmonic structures, operating from microwave to optical frequencies. Currently, we are working towards the modeling of nonlocal and quantum effects in plasmonic systems, which prevail when the dimensions of the system are becoming smaller than one nanometer (<10Å). We are using coupled-mode theory and numerical simulations to solve the nonlinear Maxwell’s equations in order to study fascinating optical nonlinear effects combined with metamaterials and plasmonics. Our main future goal is to develop accurate and efficient time and frequency domain computational methods to simulate and study a large range of structures with exotic properties, which will be inseparable numerical tools towards their experimental verification.