title: Light deflection from ferroelectric domain structures in congruent lithium tantalate crystals.
abstract: Congruently grown lithium tantalate crystals containing ferroelectric domain structures have been illuminated with ultraviolet light along the crystallographic c axis with simultaneous application of an external electric field. This gives rise to a star-shaped light diffraction pattern in the transmitted beam. The characteristics of this phenomenon are investigated and compared with those observed in lithium niobate crystals.
authors.affiliation: Physikalisches Institut der Universität Bonn, Wegelerstrasse 8, 53115 Bonn, Germany.
authors.forename: Manfred
authors.initials: M
authors.lastname: Müller
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Soergel
authors.forename: Karsten
authors.initials: K
authors.lastname: Buse