sibsutisВестник СибГУТИThe Herald of the Siberian State University of Telecommunications and Information Science1998-6920СибГУТИsibsutis-633Research ArticleСтатьиЗависимость показателей преломления ниобата лития от химического состава кристаллаDependence of refractive indices of lithium niobate on chemical compositionАтучинВ. В.AtuchinV. V.atuchin@thermo.isp.nsc.ruИнститут физики полупроводников СО РАНRussian Federation200916012023033945Copyright © Атучин В.В., 20232023Атучин В.В.Atuchin V.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.sibsutis.ru/jour/article/view/633

Рассмотрены известные экспериментальные данные о показателях преломления ниобата лития в зависимости от стехиометрии кристалла. Установлено, что необыкновенный и обыкновенный показатели преломления ниобата лития пропорциональны параметру k = Li/(Li + Nb), описывающему химический состава нестехиометрических кристаллов. Предложен метод прецизионного картирования распределения параметра k по площади пластин ниобата лития.

Available experimental data on refractive indices of lithium niobate are considered as a function of chemical composition. It is shown that extraordinary and ordinary refractive indices of lithium niobate are proportional to parameter k = Li/(Li + Nb) in nonstoichiometric crystals. A method has been proposed for precise determination of k distribution over the crystal wafers.

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