Photoinduced light scattering in cerium-doped barium strontium niobate crystals

The analysis of structural particularities and optical properties of LiNbO3 : B (0,55, 0,69 and 0,83 mol. % B2O3) was performed by methods of Raman and photoinduced light scattering, infrared absorption and laser conoscopy. It has been established that the boron impurity brings to 1 the distribution coefficient of lithium and niobium in the growing process. Thus, LiNbO3: B crystals grown from a congruent melt approach the stoichiometric crystals in ordering the structural units of the cation sublattice and the Li / Nb ratio.

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Влияние способа сильного легирования на композиционную однородность и оптические свойства монокристаллов LiNbO-=SUB=-3-=/SUB=- : Mg

Оптика и спектроскопия ◽

10.21883/os.2022.01.51906.13-21 ◽

2022 ◽

Vol 130 (1) ◽

pp. 184

Author(s):

Н.В. Сидоров ◽

Н.А. Теплякова ◽

М.Н. Палатников

Keyword(s):

Raman Spectroscopy ◽

Light Scattering ◽

Threshold Value ◽

Magnesium Concentration ◽

Direct Addition ◽

Photoinduced Light Scattering ◽

Heavily Doped ◽

A Charge ◽

Laser Conoscopy ◽

Spectroscopy Laser

Raman spectroscopy, laser conoscopy and photoinduced light scattering methods have been applied to comparatively study composition uniformity of strongly doped LiNbO3 crystals with a magnesium concentration close to a threshold value ≈5 mol% MgО, grown from a charge synthesized using precursor Nb2O5:Mg (homogeneous doping method) and at direct addition of magnesium to the melt (direct doping method). It has been shown that application of homogeneous doping method allows one to obtain compositionally more homogeneous heavily doped LiNbO3:Mg crystal than direct melt doping method.

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Features of the angle-selective photoinduced light scattering indicatrix formation in LiNbO3:Rh crystals

24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics ◽

10.1117/12.2504322 ◽

2018 ◽

Author(s):

Vitaliy A. Maksimenko

Keyword(s):

Light Scattering ◽

Scattering Indicatrix ◽

Photoinduced Light Scattering

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Kinetic Dependencies of the Photorefractive Effect in Lithium Niobate Crystals

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.386.186 ◽

2018 ◽

Vol 386 ◽

pp. 186-190

Author(s):

Alexander Vjacheslavovich Syuy ◽

Alexei A. Gabain ◽

Natalia A. Teplyakova ◽

Nikolay V. Sidorov ◽

Mikhail N. Palatnikov

Keyword(s):

Light Scattering ◽

Lithium Niobate ◽

Lithium Niobate Crystal ◽

Photorefractive Effect ◽

Kinetic Dependence ◽

Photoinduced Light Scattering ◽

Lithium Niobate Crystals ◽

Congruent Lithium Niobate

The kinetic dependence of the photorefractive effect in the congruent lithium niobate crystal is determined in the work. The adequacy of the model for calculating the photoelectric fields from the indicatrix of photoinduced light scattering is shown. Two methods for determining the induced birefringence by interferograms and on the parameters of photoinduced light scattering are compared.

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