1.5 μ m emission characteristics of Er3+-doped stoichiometric LiNbO3

The 1.5μm emission characteristics of stoichiometric LiNbO3 crystals with different Er3+ doping levels of 0.2, 0.5, 1.0, and 2.0mol% were investigated. All of the emission decays could be fitted by a single exponential curve. The lifetimes of the 1.5μm transition (I13∕24→I15∕24) were measured to be...

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Published in:Applied physics letters 2004-11, Vol.85 (19), p.4367-4369
Main Authors: Kang, Jeongan, Lee, Myeongkyu, Lee, Sunkyun, Lim, Kisoo, Somu, Kumaragurubaran, Takekawa, Shunji, Kitamura, Kenji
Format: Article
Language:English
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Summary:The 1.5μm emission characteristics of stoichiometric LiNbO3 crystals with different Er3+ doping levels of 0.2, 0.5, 1.0, and 2.0mol% were investigated. All of the emission decays could be fitted by a single exponential curve. The lifetimes of the 1.5μm transition (I13∕24→I15∕24) were measured to be 3.0–3.2ms, which are about 25% longer than those reported for conventional Er-doped congruent LiNbO3. Our analysis showed that the longer lifetime in stoichiometric LiNbO3 is likely to originate from the reduced density of intrinsic defects.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1818348