title: Exact axial electromagnetic field for vectorial Gaussian and flattened Gaussian boundary distributions.
abstract: The exact expressions of the electromagnetic field pertinent to Gaussian and flattened Gaussian linearly polarized boundary distributions have been derived in closed-form terms for any point lying on the axis. The obtained results allow the fields to be predicted for an arbitrary transverse beam size. Numerical results showing the differences between the exact results and those obtained within the paraxial framework are also presented.
authors.affiliation: Dipartimento di Ingegneria Elettronica, Università degli Studi Roma Tre and Instituto Nazionale per la Fisica della Materia, Rome, Italy. riccardo.borghi@uniroma1.it
authors.forename: Riccardo
authors.initials: R
authors.lastname: Borghi
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ciattoni
authors.forename: Massimo
authors.initials: M
authors.lastname: Santarsiero