An integral equation method for numerical computation of scattering resonances in a narrow metallic slit
An integral equation method for numerical computation of scattering resonances in a narrow metallic slit
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窄金属狭缝中散射共振数值计算的积分方程法
DOI:
10.1016/j.jcp.2019.01.046
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发表时间:
2019
影响因子:
4.1
通讯作者:
Zhang, Hai
中科院分区:
文献类型:
--
作者:
Lin, Junshan;Zhang, Hai
In this paper we present an efficient and accurate integral equation method to compute the scattering resonances for a subwavelength metallic slit structure. A new boundary integral equation is derived for the scattering problem, and the computation of scattering resonances is reduced to solving the eigenvalues of the corresponding homogeneous formulation over the complex plane. The integral operators are evaluated with high-order precisions by accurate calculations of the Green's functions for the layered medium and accelerated computation of the slit Green's function. The Newton's method is employed for solving the eigenvalues of the boundary integral formulation. We propose an effective strategy for obtaining the initial guesses of scattering resonances by introducing an approximate model for the scattering problem, for which the leading orders of the resonances are derived by asymptotic analysis. Numerical experiments are provided to demonstrate the accuracy, efficiency, and robustness of the method.
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DOI:
10.1364/josab.35.000030
发表时间:
2017
期刊:
Journal of the Optical Society of America B
影响因子:
--
作者:
Hu, Zhen;Lin, Junshan;Lu, Ya Yan;Oh, Sang-Hyun
通讯作者:
Oh, Sang-Hyun
影响因子:
1.9
作者:
Carlos Pérez;O. Bruno
通讯作者:
O. Bruno
影响因子:
64.8
作者:
Ebbesen, TW;Lezec, HJ;Wolff, PA
通讯作者:
Wolff, PA
DOI:
10.1137/17m1133786
发表时间:
2017-06
期刊:
Multiscale Model. Simul.
影响因子:
--
作者:
Junshan Lin;Hai Zhang
通讯作者:
Junshan Lin;Hai Zhang
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Xun Lu;Y. Lu
通讯作者:
Y. Lu