Effects of energy transfer among Er^3+ ions on the fluorescence decay and lasing properties of heavily doped Er:Y_3Al_5O_12
- 1 August 1990
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 7 (8) , 1456-1462
- https://doi.org/10.1364/josab.7.001456
Abstract
Nonexponential fluorescence decay has been observed from both 4I11/2 and 4I13/2 states of Er3+ ions in heavily doped Er: YAG at room temperature. Processes of cross relaxation that originate in these states are shown to be responsible. Rate equations that include cross-relaxation processes are written and numerically solved, to result in the determination of the cross-relaxation coefficients. It is found that these coefficients do not change with Er3+ concentration. The effects of the cross-relaxation processes of Er3+ ions on fluorescence decay and lasing properties are discussed.Keywords
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