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Er3+-doped fluoride glass ceramics planar waveguides containing LaF3 or binary LaF3-ZrF4 nanocrystals have been fabricated by Physical Vapor Deposition (PVD). A quantitative analysis of the photoluminescence of the 1.54 µm emission band of Er3+ ions has demonstrated that erbium ions are partitioned in both crystals and vitreous phase. The solubility of Er3+ in the segregated LaF3 nanocrystals can...
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