Analysis and direct calculation of the energy migration interaction parameter in high concentration Nd3+ doped YAG laser crystal
来源期刊:Journal of Rare Earths2009年第1期
论文作者:王殿元 郭艳艳
文章页码:62 - 65
摘 要:The energy migration interaction parameter CDD in high concentration Nd3+ doped YAG laser crystal was estimated using the Yokota-Tanimoto(Y-T) model and the spectral overlap model(SOM) of Kushida, respectively.Firstly, the experimental luminescence decay curves of 4F3/2 state of Nd3+ ions in YAG laser crystal at room temperature for 2.0at.% and 3.0at.% Nd3+ concentrations reported by Mao were fitted successfully using the Y-T model, and the parameter CDD was obtained to be 1.50×10-39 cm6/s.Secondly, the parameter CDD was directly calculated using the spectral overlap model(SOM) of Kushida;CDD was calculated to be 2.73×10-39 cm6/s.By comparing the energy migration interaction parameter CDD with the energy transfer interaction parameter CDA(1.794×10-40 cm6/s), it was concluded that the energy migration rate between Nd3+ ions in YAG laser crystal was about 11 times larger than the energy transfer rate, and that energy migration played a very important role in high concentration Nd3+-doped YAG laser crystal.
王殿元1,郭艳艳2
1. College of Science, Jiujiang University2. College of Mechanical Engineering, Jiujiang University
摘 要:The energy migration interaction parameter CDD in high concentration Nd3+ doped YAG laser crystal was estimated using the Yokota-Tanimoto(Y-T) model and the spectral overlap model(SOM) of Kushida, respectively.Firstly, the experimental luminescence decay curves of 4F3/2 state of Nd3+ ions in YAG laser crystal at room temperature for 2.0at.% and 3.0at.% Nd3+ concentrations reported by Mao were fitted successfully using the Y-T model, and the parameter CDD was obtained to be 1.50×10-39 cm6/s.Secondly, the parameter CDD was directly calculated using the spectral overlap model(SOM) of Kushida;CDD was calculated to be 2.73×10-39 cm6/s.By comparing the energy migration interaction parameter CDD with the energy transfer interaction parameter CDA(1.794×10-40 cm6/s), it was concluded that the energy migration rate between Nd3+ ions in YAG laser crystal was about 11 times larger than the energy transfer rate, and that energy migration played a very important role in high concentration Nd3+-doped YAG laser crystal.
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