title: Joint spatial-directional localization features of wave fields focused at a complex point.
abstract: A systematic study of the joint spatial-directional localization features of monochromatic wave fields focused at a complex point is presented, on the basis of recently introduced measures of spatial and directional spread for wide-angle wave fields. Such features are compared with those of a class of fields defined to achieve the theoretical minimum product of these spread measures. It is found that the two classes of fields are remarkably similar.
authors.affiliation: The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Alonso
authors.forename: Riccardo
authors.initials: R
authors.lastname: Borghi
authors.forename: Massimo
authors.initials: M
authors.lastname: Santarsiero