Defect structure and optical damage resistance of M(M=In,Mg): Fe: LiNbO3 crystals

Suhua Luo; Qingxin Meng; Xiudong Sun

doi:10.1364/PEMD.2005.39

Photorefractive Effects, Materials, and Devices
OSA Trends in Optics and Photonics (Optica Publishing Group, 2005),
paper 39
•https://doi.org/10.1364/PEMD.2005.39

Defect structure and optical damage resistance of M(M=In,Mg): Fe: LiNbO₃ crystals

Suhua Luo, Qingxin Meng, and Xiudong Sun

Photorefractive Effects, Materials, and Devices 2005

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

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Material Preparation and Characterization: Inorganic (MPCI)

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S. Luo, Q. Meng, and X. Sun, "Defect structure and optical damage resistance of M(M=In,Mg): Fe: LiNbO3 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 39.

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Abstract

The ultraviolet-visible and the infrared absorption spectra of co-doped crystals with 0.03wt.% Fe₂O₃ and various concentrations of M (M=In, Mg) were detected to investigate their defect structures. By increasing the concentration of M, we observed a shift of the absorption edge and OH^- peak for M_Nb (M replaces the normal Nb sites ) when M exceeded its threshold value. The shift of the OH^- absorption peak in Mg: Fe: LiNbO₃ is larger than that in In: Fe: LiNbO₃. At the same time, the optical damage resistance ability of M: Fe: LiNbO₃ crystals is two orders of magnitude higher than that of Fe: LiNbO₃ crystals.

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