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Single crystals of Er: LiNbO3 and Er/Yb: LiNbO3 co-doped with and without Mg2+ ion were successfully prepared. The quality of the as-grown crystals were characterized. Yb3+ was demonstrated to increase an absorption efficiency at the range of 900-1000 nm. The use of Mg2+ codoping for enhancement of the Er3+:4I13/2 →4I15/2 1.54 μm emissions were investigated. It was found that Mg2+ ion greatly increased...
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