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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 thermal activation energy of ultraviolet-induced small polarons O- in damage-resistant lithium niobate crystals

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

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By studying the temperature dependence of the dark decay dynamics of the ultraviolet-light-induced absorption coefficient changes, we measured the thermal activation energy of the ultraviolet-light-induced absorption coefficeint change in damage-resistant lithium niobate crystals. The ultraviolet-light-induced absorption changes were ascribed to the generation of the small polarons O- under the illumination of UV lights. We show that the thermal activation energy of the O- centers is influenced by the surrounding nearby negatively charged defect centers.

© 2005 Optical Society of America

OCIS Codes
(160.5320) Materials : Photorefractive materials
(190.5330) Nonlinear optics : Photorefractive optics
(210.4810) Optical data storage : Optical storage-recording materials

Q. Xu, G. Zhang, H. Qiao, B. Fu, Y. Shen, J. Xu, Y. Kong, J. Sun, and S. Chen, "Studies on thermal activation energy of ultraviolet-induced small polarons O- in damage-resistant lithium niobate crystals," 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 121.

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