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arXiv 1703.09082physics.optics
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非线性元表面的数学综合与分析

Mathematical Synthesis and Analysis of Nonlinear Metasurfaces

Karim Achouri, Yousef Vahabzadeh, Christophe Caloz

摘要:

我们提出了一个非线性元表面的合成和散射分析的讨论。为了简单起见,我们调查的情况下,具有电和磁的线性和非线性极化率组件的二阶非线性各向同性超颖表面。接下来,我们找到的合成表达式相关的非线性的指定字段,这导致定义的非反射的非线性元表面条件,本身揭示了这种结构的非互易性。最后,我们提供了基于微扰理论的散射场的近似表达式,并将相应的结果与时域有限差分模拟进行了比较。

英文摘要:

We propose a discussion on the synthesis and scattering analysis of nonlinear metasurfaces. For simplicity, we investigate the case of a second-order nonlinear isotropic metasurface possessing both electric and magnetic linear and nonlinear susceptibility components. We next find the synthesis expressions relating the susceptibilities to the specified fields, which leads to the definition of the nonlinear metasurface conditions for no reflection, themselves revealing the nonreciprocal nature of such structures. Finally, we provide the approximate expressions of the scattered fields based on perturbation theory and compare the corresponding results to finite-difference time-domain simulations.

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