title: On-axis joint transform correlation based on a four-level power spectrum.
abstract: We propose a method to obtain a single centered correlation with use of a joint transform correlator. We analyze the required setup to carry out the whole process optically, and we also present experimental results.
authors.affiliation: Departament de Física Aplicada i Optica, Universitat de Barcelona, Av Diagonal 647, E08028 Barcelona, Spain. nasi@optica.ub.es
authors.forename: I
authors.initials: I
authors.lastname: Labastida
authors.forename: A
authors.initials: A
authors.lastname: Carnicer
authors.forename: E
authors.initials: E
authors.lastname: Martín-Badosa
authors.forename: I
authors.initials: I
authors.lastname: Juvells
authors.forename: S
authors.initials: S
authors.lastname: Vallmitjana