Optical homogeneity and photorefractive properties of stoichiometric and congruent lithium niobate crystals grown using charges of different origins |
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| Authors: | N A Teplyakova N V Sidorov M N Palatnikov A V Syuy D S Shtarev |
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| Affiliation: | 1.Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center,Russian Academy of Sciences,Apatity,Russia;2.Far East State Transport University,Khabarovsk,Russia;3.Kosygin Institute of Tectonics and Geophysics, Far East Branch,Russian Academy of Sciences,Khabarovsk,Russia |
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| Abstract: | A stoichiometric lithium niobate crystal (LiNbO3 st) and congruent lithium niobate crystals grown from a charge prepared using cyclohexanone as an extractant (LiNbO3 cong(CHN)) and a charge prepared using cyclohexanone and carboxylic acid dimethylamides as extractants (LiNbO3 cong(CHN + A)) have been characterized by photoinduced light scattering and laser conoscopy. The results demonstrate that the LiNbO3 cong(CHN + A) crystals are rather homogeneous along their growth direction and possess good optical properties, similar to those of the LiNbO3 cong(CHN) crystal. At the same time, the LiNbO3 cong(CHN + A) crystal offers significantly better electro-optical properties (r e = 29.3 pm/V). |
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