Scattering from a Multi-Layered Sphere Located in a High-Order Hermite-Gaussian Beam

Abstract

Scattering of a high-order Hermite-Gaussian beam by a multi-layered sphere is analyzed. The incident highorder Hermite-Gaussian beam field is expressed by the complex-source-point method and expanded in terms of spherical vector wave functions. The beam shape coefficients of the Hermite-Gaussian beam are obtained. Under electromagnetic field boundary conditions, coefficients in the expressions of scattering fields are derived. Results of the numerical calculation of scattering intensity are presented. The effects of the particle parameters and beam parameters on scattering intensity are discussed in detail.