title: Accurate phase-shifting digital interferometry.
abstract: In phase-shifting interferometry experiments, the accuracy of the phase shift is a major issue. Many experimental and data analyses are done to cancel phase-shift errors inherent to the modulation techniques used. We propose to remove most of the phase-shift error by recourse to a frequency-shifting method. This approach can be applied to both holography and interferometry. We validate the idea with a holographic experiment.
authors.affiliation: Ecole Normale Supérieure, Laboratoire Kastler-Brossel, UMR 8552 Université Pierre et Marie Curie, Paris Cedex 05, France. atlan@optique.espci.fr
authors.forename: M
authors.initials: M
authors.lastname: Atlan
authors.forename: M
authors.initials: M
authors.lastname: Gross
authors.forename: E
authors.initials: E
authors.lastname: Absil