Internal and near-surface field distributions for a spheroidal particle illuminated by a focused Gaussian beam: On-axis case.

Abstract: Within the framework of the generalized Lorenz–Mie theory (GLMT), scattering from a homogeneous spheroidal particle illuminated by an on-axis Gaussian beam is formulated analytically, with more 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. This study may be useful to provide some physical insights to the understanding of focused beam scattering by nonspherical particles. [Copyright &y& Elsevier]