title: Polarization gratings, phase rulings, and moiré analysis.
abstract: It is demonstrated how rulings that are based on light polarization can be used for the generation of improved moiré patterns. A simple explanation based on gratings algebra is given. A new arrangement is suggested that yields a polarization grating with a tunable-pitch or variable-width ratio of the polarization bands.
authors.forename: A
authors.initials: A
authors.lastname: Livnat
authors.forename: O
authors.initials: O
authors.lastname: Kafri