Abstract
Electro-optic property of Ti4+-doped LiNbO3 single crystal is investigated. The electro-optic coefficients γ33 and γ13 of a series of bulk Ti4+-doped congruent LiNbO3 crystals with different Ti4+ concentrations up to 12 mol% in crystal were measured by Mach-Zehnder interferometric method and correlated with the Ti4+-doping concentration. Both clamped and unclamped coefficients were measured. The results show that both γ33 and γ13 reveal a degradation tendency with the increase of Ti4+ concentration in both cases of clamped and unclamped measurements. Nevertheless, the degradation is no more than 15% for the considered Ti4+ concentration up to 12 mol%. The little effect is explained qualitatively and comprehensibly.
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