Yokota M, He S, Takenaka T
Department of Electrical and Electronic Engineering, Miyazaki University, Japan.
J Opt Soc Am A Opt Image Sci Vis. 2001 Jul;18(7):1681-9. doi: 10.1364/josaa.18.001681.
Scattering of a Hermite-Gaussian beam field by a chiral sphere is analyzed. A Hermite-Gaussian beam field is expressed as a superposition of multipole fields at complex-source points. Electromagnetic fields are expanded in terms of the spherical vector wave functions. The unknown expansion coefficients for the scattered field and the internal field are determined by the boundary conditions. As numerical examples, the scattered near fields of the beam incidence are calculated, and the effects of the chirality and the radius of the chiral sphere on the fields are examined. The results for a Gaussian beam incidence are also compared with those of a plane-wave incidence.
分析了厄米 - 高斯光束场被手性球体的散射。厄米 - 高斯光束场表示为复源点处多极场的叠加。电磁场用球矢量波函数展开。散射场和内部场的未知展开系数由边界条件确定。作为数值示例，计算了光束入射的散射近场，并研究了手性和手性球体半径对场的影响。还将高斯光束入射的结果与平面波入射的结果进行了比较。
