title: Fractal zone plates.
abstract: Fractal zone plates (FZPs), i.e., zone plates with a fractal structure, are described. The focusing properties of this new type of zone plate are compared with those of conventional Fresnel zone plates. It is shown that the axial irradiance exhibited by the FZP has self-similarity properties that can be correlated to those of the diffracting aperture.
authors.affiliation: Departamento de Optica, Universitat de València, E-46100 Burjassot, Spain. genaro.saavedra@uv.es
authors.forename: Genaro
authors.initials: G
authors.lastname: Saavedra
authors.forename: Walter D
authors.initials: WD
authors.lastname: Furlan
authors.forename: Juan A
authors.initials: JA
authors.lastname: Monsoriu