Determination of the Center Composition of Gradient-Activated Lithium Niobate Crystals Doped with Magnesium and Chromium
E. V. Stroganova, V. V. Galutskii, K. V. Sudarikov, D. A. Rasseikin, N. A. Yakovenko
Kuban State University, ul. Stavropol’skaya 149, Krasnodar, 350040 Russia
Keywords: градиентно активированные кристаллы, оптические центры, дефектная структура, пороговые концентрации примеси, gradient-activated crystals, optical centers, defect structure, threshold dopant concentrations
Pages: 167-173
Abstract
Investigations of the defect structure of a gradient-activated stoichiometric LiNbO3:Mg2+, Cr3+ crystal, in which the chromium concentration has a constant value of 0.1 at. % along the crystal growth axis, and the magnesium concentration changes smoothly from 5.5 to 2.0 al. %. The threshold concentration of Mg2+ ions (2.35 at. %) in these crystals with a concentration width of change in the center composition (Cr optical center and its nearest neighbors) of 0.09 at. % Mg2+ ions is established.
DOI: http://dx.doi.org/10.3103/S8756699016020096
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