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Conferences > PEMD > 2005 > MPCI > 50

The growth of large-diametered nearly stoichiometric lithium niobate crystals by double crucible technique

Yongfa Kong, Jun Sun, Ling Zhang, Wenbo Yan, Jingjun Xu, and Guangyin Zhang

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Abstract

A new double crucible method was designed. Nearly stoichiometric lithium niobate (NSLN) crystals were grown in the lower crucible with a melt composition of [Li2O] / [Nb2O5] = 58 / 42, and it is the melt not the powder that was continuously added from the higher crucible. The composition of the adding melt is [Li2O] / [Nb2O5] = 36 / 64, far away from the stoichiomtric point of 50 / 50. Large-diametered NSLN crystals were successfully grown, and the average concertration of Li2O reaches 49.85 mol% with a radial composition deviation of ± 0.02 mol% and a axial composition deviation less than ± 0.03 mol%/cm.

© 2005 Optical Society of America

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