The search of homogeneity of LiNbO3 crystals grown of charge with different genesis

The comparative analysis of homogeneity was carried out for LiNbO3:Mg ([Mg]≥5mol%), grown of Nb2O5:Mg charge synthesized at homogeneous Mg doping during the extraction of Nb2O5 and of usual charge synthesized by adding MgO to the Nb2O5. Data obtained by optical microscopy and by Raman spectroscopy reveal that homogeneously doped crystals are more homogeneous and have better structure characteristics. •The new method of LiNbO3 doping by Mg is developed.•The homogeneities of usually doped and homogeneously doped crystals are compared.•The homogeneously doped crystals have better distribution of dopant than usually doped one.