首页|Optical Properties, Structural Homogeneity, and Defect Centers of Double-Doped LiNbO_3:Zn:Mg Single Crystals Obtained Using Different Technologies

Optical Properties, Structural Homogeneity, and Defect Centers of Double-Doped LiNbO_3:Zn:Mg Single Crystals Obtained Using Different Technologies

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  • Springer Nature
Features of the defect structure of a nominally pure LiNbO_(3stoich) crystal and double-doped LiNbO_3:Zn:Mg (3.45:1.41 mol %) and LiNbO_3:Zn:Mg (3.45:1.22 mol %) single crystals have been studied using Raman spectroscopy, infrared absorption spectroscopy, photoluminescence, laser conoscopy, and photoinduced light scattering. The material for the study has been obtained using homogeneous and direct doping technology. It has been shown that double-doped LiNbO_3:Zn:Mg crystals obtained using different technologies have high resistance to damage by laser radiation. However, the LiNbO_3:Zn:Mg (3.45:1.22 mol %) crystal obtained by direct doping technology is characterized by lower compositional uniformity compared to the LiNbO_3:Zn:Mg (3.45:1.41 mol %) crystal obtained by homogeneous doping technology. Raman spectra have showed that the features of the defect structure of double-doped LiNbO_3:Zn:Mg crystals are largely determined by the magnesium impurity. This may be the reason that the influence of the ordering mechanism of magnesium cations (～1.22-1.44 mol %) prevails over the influence of the disordering mechanism of zinc cations (～3.45 mol %) on the features of the structural units of the cation sublattice. It has been found that the lowest concentration of OH groups and photoluminescence intensity in the near-IR region is characteristic of the LiNbO_3:Zn:Mg (3.45:1.41 mol %) crystal obtained by homogeneous doping technology.

lithium niobate crystaldouble dopingOH groupsluminescence centerspoint and complex defectsRaman spectroscopylaser conoscopyphotoinduced light scattering

R. A. Titov、M. V. Smirnov、L. A. Bobreva、N. A. Teplyakova、M. N. Palatnikov、I. V. Biryukova、S. M. Masloboeva、A. S. Kryiov、A. N. Vtyurin、N. V. Sidorov

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Tananaev Institute of Chemistry-Subdivision of the Federal Research Centre 'Kola Science Centre of the Russian Academy of Sciences, 'Apatity, 184209 Russia

Kirensky Institute of Physics, Krasnoyarsk, 660036 Russia

Kirensky Institute of Physics, Krasnoyarsk, 660036 Russia||Siberian Federal University, Krasnoyarsk, 660041 Russia

2025

10.1134/S2075113324701648

Inorganic materials: applied research

Inorganic materials: applied research

ISSN：2075-1133
年,卷(期)：2025.16(2)
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