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Simulating Nonlinear Terahertz Generation using Finite-Difference Time-Domain

Metamaterials' electromagnetic characteristics are typically local linear responses in the realm of optics. This work examines the FDTD solution of the hydrodynamic model of the free electron gas. By employing a hydrodynamic model, it is possible to study the interaction between electromagnetic waves and metal metamaterials that is nonlocal and nonlinear.