Applicability conditions for the dipole approximation in the problems of scattering of surface plasmon polaritons

被引：13

作者：

Evlyukhin, AB ^{[1
]}

Bozhevolnyi, SI

机构：

[1] Vladimir State Univ, Vladimir 600000, Russia

[2] Univ Aalborg, DK-9220 Aalborg, Denmark

来源：

JETP LETTERS | 2005年 / 81卷 / 05期

关键词：

D O I：

10.1134/1.1921319

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the method of the tensor Green's function of the wave equation, the conditions have been determined under which the dipole approximation is sufficient in the problem of the scattering of surface optical electromagnetic waves (surface plasmon polaritons) on a small spherical particle. The independence of the electric field inside the scatterer of the spatial coordinates is used as the main requirement of the dipole approximation. Conditions are obtained in the form of inequalities involving the wavenumber, the material parameters of the system, and the size of the scatterer and its position with respect to the surface on which plasmon polaritons are excited. (C) 2005 Pleiades Publishing, Inc.

引用

页码：218 / 221

页数：4

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