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

机译:高斯光束通过两个平行的非吸收电介质圆柱体的散射:位移和旋转自由度

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摘要

An extension of the problem of a moderately focused 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. Together 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.
机译:提出了通过任意折射率和半径的两个平行的非吸收性介质圆柱体的布置来散射适度聚焦的高斯光束的问题的扩展。本解决方案中引入的特征是两个圆柱体之间的相对角位置坐标(φ_(0))作为自由度。明确依赖于该变量的散射系数,光束形状系数和消光效率。连同位移坐标d,可以研究其他各种散射配置。该解决方案的适用性以消光曲线的形式给出,以φ_(0)作为变化的主要参数。提出该模型作为研究e逝波显微镜的一种手段。

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