Analysis of the time-domain PML problem for the electromagnetic scattering by periodic structures

Analysis of the time-domain PML problem for the electromagnetic scattering by periodic structures
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周期性结构电磁散射时域PML问题分析

DOI:
10.4310/cms.2022.v20.n7.a1
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发表时间:
2022
期刊:
Commun. Math. Sci.
影响因子:
--
通讯作者:
Peijun Li
Peijun Li
中科院分区:
其他
文献类型:
--
作者:
Yanli Chen;Yixian Gao;Peijun Li

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.本文研究了平面电磁波在周期结构上的时域散射问题。通过将完全匹配层(PML)技术应用于无界区域中的散射问题,在有界区域中形成了一个初始边值问题。基于拉普拉斯变换的抽象反演定理和频域分析,证明了截断时域PML问题的适定性和稳定性。此外,通过研究Dirichlet-to-Neumann算子在原始散射问题和截断PML问题之间的误差,证明了截断PML问题解的指数收敛性.
. This paper is concerned with the time-domain scattering of an electromagnetic plane wave by a periodic structure. An initial boundary value problem is formulated in a bounded domain by applying the perfectly matched layer (PML) technique to the scattering problem imposed in an unbounded domain. Based on the abstract inversion theorem of the Laplace transform and the analysis in the frequency domain, the well-posedness and stability are established for the truncated time-domain PML problem. Moreover, the exponential convergence of the solution for the truncated PML problem is proved by a careful study on the error for the Dirichlet-to-Neumann operators between the original scattering problem and the truncated PML problem.
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