Wavelength dependence of light-induced domain nucleation in MgO-doped congruent LiNbO3 crystal

Within the wavelength range from 351to799nm, the different reductions of nucleation field induced by the focused continuous laser irradiation are achieved in the 5mol% MgO-doped congruent LiNbO3 crystals. The reduction proportion increases exponentially with decreasing irradiation wavelength and dec...

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Bibliographic Details
Published in:Applied physics letters 2007-01, Vol.90 (4)
Main Authors: Zhi, Ya’nan, Liu, De’an, Qu, Weijuan, Luan, Zhu, Liu, Liren
Format: Article
Language:English
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Summary:Within the wavelength range from 351to799nm, the different reductions of nucleation field induced by the focused continuous laser irradiation are achieved in the 5mol% MgO-doped congruent LiNbO3 crystals. The reduction proportion increases exponentially with decreasing irradiation wavelength and decreases exponentially with increasing irradiation wavelength. At one given wavelength, the reduction proportion increases exponentially with increasing irradiation intensity. An assumption is proposed that the reduction of nucleation field is directly related to the defect structure of crystal lattice generated by the complex coaction of incident irradiation field and external electric field.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2434151