Author:
Bruce Allan J.,Reed W. A.,Neeves A. E.,Copeland L. R.,Grodkiewicz W. H.,Lidgard A.
Abstract
ABSTRACTLifetimes for the 4I13/2–4I15/2 transition of excited Er3+ ions in sodium di-silicate glasses have been measured as a function of Er3+ concentration and glass melting conditions. Lifetimes in excess of 20 ms have been measured for Er3+ levels up to 1021 ions/cm3. For Er3+ levels above 5 × 1020 ions/cm3 high lifetimes are only observed in glasses with low −OH impurity levels. The results are consistent with a quenching mechanism incorporating energy transfer between Er3+ ions followed by non-radiative decay via Er3+ ions coupled to the −OH impurity phonons.
Publisher
Springer Science and Business Media LLC
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