title: Evaluation and correction of aberrations in an optical correlator by phase-shifting interferometry.
abstract: We propose a new method for evaluating and correcting aberrations in a Vander Lugt correlator. The technique is achieved with liquid-crystal displays of the correlator and allows the task to be performed in situ. We present the theory on which the method is based and the experimental results that we obtained by applying it in a convergent correlator.
authors.affiliation: Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.
authors.forename: Claudio
authors.initials: C
authors.lastname: Iemmi
authors.forename: Alfonso
authors.initials: A
authors.lastname: Moreno
authors.forename: Josep
authors.initials: J
authors.lastname: Nicolás
authors.forename: Juan
authors.initials: J
authors.lastname: Campos