title: Mie scattering of highly focused, scalar fields: an analytic approach.
abstract: We present a method for modeling the scattering of a focused scalar field incident on a spherical particle. This approach involves the expansion of the incident field in an orthonormal basis of closed-form solutions of the Helmholtz equation which are nonparaxial counterparts of Laguerre-Gaussian beams. This method also allows for the analytic calculation of the forces and torques exerted on a particle at any position with respect to the beam's focus.
authors.forename: Nicole J
authors.initials: NJ
authors.lastname: Moore
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Alonso