Abstract
A comparative study of the optical and structural homogeneity of a LiNbO3 crystal with a congruent composition and LiNbO3 : ZnО ([ZnО] ≈ 5.4–6.4 mol % in melt) crystals grown from charges of different origin has been performed. It is shown that the LiNbO3 : ZnО crystals obtained by direct solid-phase doping have a higher general structural and optical homogeneity, provided that the crystal composition is sufficiently homogeneous along the growth axis. Homogeneously doped LiNbO3 : ZnО crystals, characterized by a high general structural homogeneity on the scale level of 10–500 µm, have poorer optical and structural homogeneity on the micron and submicron levels as compared with directly doped LiNbO3 : ZnО crystals.
Published Version
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