期刊
OPTICS EXPRESS
卷 18, 期 3, 页码 2230-2235出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.002230
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资金
- European Community [FP6-IST 033574]
- Spanish Ministry of Science
This study reports the estimation of the inverted Er fraction in a system of Er doped silicon oxide sensitized by Si nanoclusters, made by magnetron sputtering. Electroluminescence was obtained from the sensitized erbium, with a power efficiency of 10(-2)%. By estimating the density of Er ions that are in the first excited state, we find that up to 20% of the total Er concentration is inverted in the best device, which is one order of magnitude higher than that achieved by optical pumping of similar materials. (C) 2009 Optical Society of America
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