title: Zone-plate diffraction patterns in gradient-index media.
abstract: Diffraction patterns inside gradient-index media in which a complex zone plate is placed at a Fourier transform plane are studied by making use of the optical propagator. The results are illustrated with an example corresponding to a selfoc medium and a Fresnel zone plate of the amplitude and of the phase.
authors.forename: Jose
authors.initials: J
authors.lastname: Rivas-Moscoso
authors.forename: Carlos
authors.initials: C
authors.lastname: Gomez-Reino
authors.forename: Maria
authors.initials: M
authors.lastname: Perez