Gaussian beam scattering by two parallel nonabsorbing dielectric cylinders: displacement and rotational degrees of freedom

被引：0

作者：

Simao, Andre Gondim ^{[1
]}

Rodrigues Furtado de Mendonca, Jose Paulo ^{[2
]}

Guimaraes, Luiz Gallisa ^{[3
]}

Guaranho de Moraes, Pedro Claudio ^{[3
]}

机构：

[1] Escola Agrotecn Fed Barbacena, BR-36205018 Barbacena, MG, Brazil

[2] Univ Fed Juiz de Fora, Inst Ciencias Exatas, Dept Fis, BR-36036330 Juiz De Fora, MG, Brazil

[3] Univ Fed Rio de Janeiro, Inst Fis, Dept Fis Nucl, BR-21945970 Rio De Janeiro, Brazil

来源：

APPLIED OPTICS | 2008年 / 47卷 / 36期

关键词：

D O I：

10.1364/AO.47.006701

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An extension of the problem of a moderately focussed Gaussian beam scattered by an arrangement of two parallel nonabsorbing dielectric cylinders of arbitrary refraction indexes and radii is developed. The feature introduced in the present solution is the relative angular position coordinate between the two cylinders (phi(0)) as a degree of freedom. Explicit dependence on this variable of scattering coefficients, beam shape coefficient, and extinction efficiency is given. Togetber with the displacement coordinate d, various other scattering configurations can be studied. The applicability of the solution is given in the form of extinction curves taking phi(0) as the main parameter for variation. The model is proposed as a means of investigating evanescent wave microscopy. (C) 2008 Optical Society of America

引用

页码：6701 / 6709

页数：9

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