The Growth and Characterization of Sc-Doped LiNbO_3(<Special Issue>Crystal Growth of Lithium Niobate and Lithium Tantalate and their Photo-refraction)

抄録

High-quality scandium-doped LiNbO_3 single crystals were grown by the Czochralski technique from congruent melts containing 0.4-4.0 mol%Sc. At a scandium concentration of 1.3mol%, the Curie temperature, refractive indices and absorption edge shift displayed anomalous behavior as a function of scandium concentration. Qualitatively, the behavior was similar to that observed in Mg: LiNbO_3, except the optical damage level increased with increasing scandium concentration. The similarities and differences between Mg and Sc-doped LiNbO_3 are investigated.