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Optics InfoBase > Conference Papers > PEMD > 2005 > MPCI > Page 138 © 2005 OSA

Conference Paper
Photorefractive Effects, Materials, and Devices
Sanya, Hainan China
July 19, 2005
ISBN: 1-55752-793-8
Material Preparation and Characterization: Inorganic (MPCI)

Studies on the ultraviolet-light-induced absorption changes in congruent LiNbO3:Mg

Bo Fu, Guoquan Zhang, Lubing Zhao, Haijun Qiao, Qingjun Xu, Yan Shen, Jingjun Xu, Yongfa Kong, Jun Sun, and Shaolin Chen

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Abstract

By measuring the ultraviolet-light-induced absorption coefficient changes and the ultraviolet-light-gated two-color recording sensitivity at 633 nm, we found that the ultraviolet-light-induced absorption coefficient changes in congruent LiNbO3:Mg has a threshold effect with respect to the Mg-doping concentration. It is only when the concentration of Mg is more than 3.0 mol.% that the ultraviolet-light-induced absorption coefficient changes can be observed. This threshold value is lower than the well-known damage-resistant threshold value of 4.6 mol.% for Mg in congruent LiNbO3:Mg. We attribute the appearance of the ultraviolet-light-induced absorption coefficient changes to the elimination of the antisite defect NbLi and the formation of O- where a hole is trapped at a O2- site near a negatively charged center.

© 2005 Optical Society of America

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(160.3730) Materials : Lithium niobate
(190.5330) Nonlinear optics : Photorefractive optics
(260.7190) Physical optics : Ultraviolet

Citation
B. Fu, G. Zhang, L. Zhao, H. Qiao, Q. Xu, Y. Shen, J. Xu, Y. Kong, J. Sun, and S. Chen, "Studies on the ultraviolet-light-induced absorption changes in congruent LiNbO3:Mg," in Photorefractive Effects, Materials, and Devices, G. Zhang, D. Kip, D. Nolte, and J. Xu, eds., Vol. 99 of OSA Trends in Optics and Photonics (Optical Society of America, 2005), paper 138.
http://www.opticsinfobase.org/abstract.cfm?URI=PEMD-2005-138


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