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- Title
Full Hydrodynamic Model of Nonlinear Electromagnetic Response in Metallic Metamaterials.
- Authors
Ming Fang; Zhixiang Huang; Sha, Wei E. I.; Xiong, Xiaoyan Y. Z.; Xianliang Wu
- Abstract
Applications of metallic metamaterials have generated significant interest in recent years. Electromagnetic behavior of metamaterials in the optical range is usually characterized by a locallinear response. In this article, we develop a finite-difference time-domain (FDTD) solution of the hydrodynamic model that describes a free electron gas in metals. Extending beyond the locallinear response, the hydrodynamic model enables numerical investigation of nonlocal and nonlinear interactions between electromagnetic waves and metallic metamaterials. By explicitly imposing the current continuity constraint, the proposed model is solved in a self-consistent manner. Charge, energy and angular momentum conservation laws of high-order harmonic generation have been demonstrated for the first time by the Maxwell-hydrodynamic FDTD model. The model yields nonlinear optical responses for complex metallic metamaterials irradiated by a variety of waveforms. Consequently, the multiphysics model opens up unique opportunities for characterizing and designing nonlinear nanodevices.
- Subjects
FINITE difference time domain method; NONLINEAR magnetics devices; ELECTROMAGNETIC waves; HYDRODYNAMICS; NONLINEAR systems; IRRADIATION
- Publication
Progress in Electromagnetics Research, 2016, Vol 157, p63
- ISSN
1070-4698
- Publication type
Article
- DOI
10.2528/pier16100401