title: Polarization phase stepping with a savart element.
abstract: The imaging properties of a real-time shearing interferometer are presented. The use of Savart elements, both as a beam displacer and an analyzer in a polarization phase-stepping scheme, is demonstrated in a real-time, two-camera, four-bucket shearing interferometer. A simple calculation scheme for ray propagation through uniaxial, birefringent elements is presented, and the effects on the image formation through 6-cm-long Savart elements is discussed.
authors.forename: A L
authors.initials: AL
authors.lastname: Weijers
authors.forename: H
authors.initials: H
authors.lastname: van Brug
authors.forename: H J
authors.initials: HJ
authors.lastname: Frankena