Han Lu, Han Yiping, Wang Jiajie, Cui Zhiwei
J Opt Soc Am A Opt Image Sci Vis. 2014 Sep 1;31(9):1946-55. doi: 10.1364/JOSAA.31.001946.
Within the framework of generalized Lorenz-Mie theory, scattering from a homogeneous spheroidal particle illuminated by an on-axis zero-order Bessel beam is formulated analytically, with special attention paid to the investigation of internal and near-surface fields. Numerical results concerning the spatial distributions of internal and near-surface fields are presented for various parameter values, such as the half-cone angle of the incident zero-order Bessel beam, the major axis, the minor axis, and the refractive index of the spheroid. The study of internal and near-surface field distributions will contribute to the understanding of Bessel beam scattering by nonspherical particles with sizes close to the incident wavelength.
在广义洛伦兹 - 米氏理论框架内，对由轴上零阶贝塞尔光束照射的均匀椭球体粒子的散射进行了解析公式推导，特别关注内部场和近表面场的研究。给出了针对各种参数值（如入射零阶贝塞尔光束的半锥角、椭球体的长轴、短轴和折射率）的内部场和近表面场空间分布的数值结果。对内部场和近表面场分布的研究将有助于理解尺寸接近入射波长的非球形粒子对贝塞尔光束的散射。
