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高阶高斯光束照射下球体的电磁场计算。II. 远场散射。

Electromagnetic field calculations for a sphere illuminated by a higher-order Gaussian beam. II. Far-field scattering.

作者信息

Barton J P

机构信息

Department of Mechanical Engineering, College of Engineering and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0656, USA.

出版信息

Appl Opt. 1998 May 20;37(15):3339-44. doi: 10.1364/ao.37.003339.

DOI:10.1364/ao.37.003339
PMID:18273293
Abstract

A previously developed theoretical procedure for determination of electromagnetic fields associated with the interaction of a higher-order Gaussian beam with a homogeneous spherical particle is used to investigate the effects of incident beam type on far-field scattering. Far-field scattering patterns are calculated for (0,0), (0,1), and (1,1) mode Hermite-Gaussian beams and for the helix doughnut mode beam. The effects of incident beam type on the angular distribution of far-field scattering, for both on-sphere-center and off-sphere-center focusing, are examined.

摘要

一种先前开发的用于确定高阶高斯光束与均匀球形粒子相互作用所产生的电磁场的理论方法，被用于研究入射光束类型对远场散射的影响。计算了(0,0)、(0,1)和(1,1)模厄米-高斯光束以及螺旋环形光束的远场散射图样。研究了入射光束类型对球心聚焦和离球心聚焦时远场散射角分布的影响。

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