title: Phase shifting digital holography implemented with a twisted-nematic liquid-crystal display.
abstract: We describe and experimentally demonstrate a phase shifting method based on the lateral displacement of a grating implemented with a twisted-nematic liquid-crystal spatial light modulator. This method allows an accurate implementation of the phase shift without requiring moving parts. The technique is implemented in a Mach-Zehnder digital holography setup in which the field transmitted by the sample object freely propagates to the hologram plane.
authors.affiliation: Instituto Nacional de Astrofísica, Optica y Electrónica, Apartado Postal 51 y 216, Puebla, PUE 72000, México.
authors.forename: Maria-Luisa
authors.initials: ML
authors.lastname: Cruz
authors.forename: Albertina
authors.initials: A
authors.lastname: Castro
authors.forename: Victor
authors.initials: V
authors.lastname: Arrizón