本文研究了共掺Er3+/Yb3+P2O3-B2O3-Al2O3-SrO-BaO玻璃的能量转移过程.实验中制备了高掺杂Yb3+离子的双掺Er3+/Yb3+的磷酸盐玻璃样品.在Er3+/Yb3+掺杂比率>1:18(mol%)时,观测到了基于Yb3+离子至Er3+离子能量转移下Er3+(4I13/2→4I15/2)的增强发射和Yb3+(2F7/2→2F5/2)发射的减弱,当Yb3+离子掺杂浓度超过2.1×1021ions/cm3时(Er3+/Yb3+≤1:18,mol%),由于Yb3+离子的自淬灭效应,Er3+离子的发射强度降低.实验中得到了Yb3+离子的最佳掺杂浓度为1.74×1021ions/cm3.
Energy transfer study has been made in Er3+ /Yb3+ cooped P2O3- B2O3- Al2O3- SrO- BaO glasses. Er3+ /Yb3+ codoped phosphate glass samples were prepared with high concentration of Yb3+ ions. Enhancement of Er3+ (4I13/2→ 4I15/2)emission and a decrease in the Yb3+ emission (2F7/2 → 2F5/2) can be observed when the doping concentration ratio Er3+ /Yb3+ is >1:18 (mol% ) as a result of energy transfer from Yb3+ ions to Er3+ ions. When the concentration of Yb3+ ions is high enough (NYb>2.1× 1021ions/cm3, Er3+ /Yb3+ ≤ 1:18, mol% ), emission intensity of Er3+decreases due to the radiative trapping of Yb3+ ions. The best doping concentration of Yb3+ ion was found to be approximately 1.74× 1021ions/cm3.
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