Defect Complexes and Optical Properties of Doubly Doped Lithium Niobate Crystals
- Russian Academy of Sciences, Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center Federal Research Center (Russian Federation)
The effect of defect complexes related to the presence of protons on the optical properties of LiNbO{sub 3}:Y(0.24):Mg(0.63) and LiNbO{sub 3}:Gd(0.25):Mg(0.75) (wt %) crystals has been studied using IR absorption spectroscopy, photoinduced light scattering, and laser conoscopy. The results indicate that the absorption bands at frequencies of 3483 and 3486 cm{sup –1} correspond to vibrations of a V{sub Li}{sup -}–OH{sup −} defect complex. To a Mg {sub Li}{sup +} - Mg {sub Nb}{sup 3-}–OH{sup −}defect complex in the LiNbO{sub 3}:Gd(0.25):Mg(0.75) crystal correspond bands at frequencies of 3526 and 3535 cm{sup –1}. In the LiNbO{sub 3}:Y(0.24):Mg(0.63) crystal, we have detected an anomalous opening of the speckle structure of the photoinduced light scattering indicatrix.
- OSTI ID:
- 22787937
- Journal Information:
- Inorganic Materials, Vol. 54, Issue 10; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0020-1685
- Country of Publication:
- United States
- Language:
- English
Similar Records
Field induced modification of defect complexes in magnesium-doped lithium niobate
Growth, defect structure, and THz application of stoichiometric lithium niobate