Light deflection from ferroelectric domain structures in congruent lithium tantalate crystals.
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.
Müller
Manfred
M
Physikalisches Institut der Universität Bonn, Wegelerstrasse 8, 53115 Bonn, Germany.
Soergel
Elisabeth
E
Buse
Karsten
K