Application of semiclassical and geometrical optics theories to resonant modes of a coated sphere

被引:5
作者
Bambino, TM [1 ]
Breitschaft, AMS [1 ]
Barbosa, VC [1 ]
Guimaraes, LG [1 ]
机构
[1] Univ Fed Rio de Janeiro, Inst Fis, Dept Fis Nucl, BR-21945970 Rio De Janeiro, Brazil
关键词
D O I
10.1364/JOSAA.20.000489
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This work deals with some aspects of the resonant scattering of electromagnetic waves by a metallic sphere covered by a dielectric layer, in the weak-absorption approximation. We carry out a geometrical optics treatment of the scattering and develop semiclassical formulas to determine the positions and widths of the system resonances. In addition, we show that the mean lifetime of broad resonances is strongly dependent on the polarization of the incident light. (C) 2003 Optical Society of America.
引用
收藏
页码:489 / 498
页数:10
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