Influence of Ultraviolet Illumination on the Fabrication of Reversed Domain of Undoped and Doped Lithium Niobate Crystals

Qingxin Xi; De’an Liu; Ya’nan Zhi; Nan Xu; Liren Liu

doi:10.1364/PEMD.2005.819

Photorefractive Effects, Materials, and Devices
OSA Trends in Optics and Photonics (Optica Publishing Group, 2005),
paper 819
•https://doi.org/10.1364/PEMD.2005.819

Influence of Ultraviolet Illumination on the Fabrication of Reversed Domain of Undoped and Doped Lithium Niobate Crystals

Qingxin Xi, De’an Liu, Ya’nan Zhi, Nan Xu, and Liren Liu

Photorefractive Effects, Materials, and Devices 2005

Sanya, Hainan China
ISBN: 1-55752-793-8

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Q. Xi, D. ’a. Liu, Y. ’n. Zhi, N. Xu, and L. Liu, "Influence of Ultraviolet Illumination on the Fabrication of Reversed Domain of Undoped and Doped 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 (Optica Publishing Group, 2005), paper 819.

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Abstract

The influence of UV on realizing domain reverse in LiNbO₃ Crystals is investigated experimentally. With a certain external electric field, some samples of LiNbO₃ are illuminated by an ultraviolet laser of 365nm wavelength. For the reason that the coercive field of the crystals is reduced by exposure of UV, it is only the illuminated regions whose domains are reversed in pure LiNbO₃ crystals, instead of in LiNbO₃:Ru:Fe. The results prove that this method can be used to realize the fabrication of periodically poled LiNbO₃ crystals, and it will become an effective solution for smaller periods.

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