title: Generalized Lorenz-Mie theory for an arbitrarily oriented, located, and shaped beam scattered by a homogeneous spheroid.
abstract: The theory of an arbitrarily oriented, shaped, and located beam scattered by a homogeneous spheroid is developed within the framework of the generalized Lorenz-Mie theory (GLMT). The incident beam is expanded in terms of the spheroidal vector wave functions and described by a set of beam shape coefficients (G(m)(n),(TM),G(m)(n),(TE)). Analytical expressions of the far-field scattering and extinction cross sections are derived. As two special cases, plane wave scattering by a spheroid and shaped beam scattered by a sphere can be recovered from the present theory, which is verified both theoretically and numerically. Calculations of the far-field scattering and cross sections are performed to study the shaped beam scattered by a spheroid, which can be prolate or oblate, transparent or absorbing.
authors.affiliation: Institute of Particle and Two-phase Flow Measurement Technology, University of Shanghai for Science and Technology, Shanghai, China. f3_xu@yahoo.com
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
authors.forename: Kuanfang
authors.initials: K
authors.lastname: Ren
authors.forename: Gérard
authors.initials: G
authors.lastname: Gouesbet
authors.forename: Gérard
authors.initials: G
authors.lastname: Gréhan
authors.forename: Xiaoshu
authors.initials: X
authors.lastname: Cai