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Appl Opt. 2004 Dec 1;43(34):6344-7.

Light deflection from ferroelectric domain structures in congruent lithium tantalate crystals.

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  • 1Physikalisches Institut der Universität Bonn, Wegelerstrasse 8, 53115 Bonn, Germany.


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.

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