High quantum fluorescence yield of Er~(3+) at 1.5 μm in an Yb~(3+), Ce~(3+)-codoped CaF_2 crystal

Jun Xu; Liangbi Su; Hongjun Li; Dan Zhang; Lei Wen; Hui Lin; Guangjun Zhao

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High quantum fluorescence yield of Er~(3+) at 1.5 μm in an Yb~(3+), Ce~(3+)-codoped CaF_2 crystal

机译：Yb〜（3 +），Ce〜（3+）掺杂CaF_2晶体中1.5μm处Er〜（3+）的高量子荧光产率

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摘要

For the first time, a quaternary doping system of Er~(3+), Yb~(3+), Ce~(3+), Na~+:CaF_2 single crystal was demonstrated to have high fluorescence yield in the eye-safe 1.5 μm region under 980 nm laser diode pumping, with relatively broad and flat gain curves. A simplified model was established to illustrate the effect of Ce~(3+) on the branching ratio for the Er~(3+) ~4I_(11/2) → ~4I_(13/2) transition. With 0.2-at.% Er~(3+) and 2.0-at.% Ce~(3+) in the quaternary-doped CaF_2 crystal, the branching ratio was estimated to be improved more than 40 times by the deactivating effect of Ce~(3+) on the Er~(3+) ~4I_(11/2) level. The quaternary-doped CaF_2 system shows great potential to achieve high laser performance in the 1.5 μm region.

机译：首次证明Er〜（3 +），Yb〜（3 +），Ce〜（3 +），Na〜+：CaF_2单晶的四元掺杂体系对人眼安全性高。在980 nm激光二极管泵浦下的1.5μm区域，具有相对宽且平坦的增益曲线。建立简化模型以说明Ce〜（3+）对Er〜（3+）〜4I_（11/2）→〜4I_（13/2）跃迁的支化比的影响。在四元掺杂的CaF_2晶体中，以0.2at。％的Er〜（3+）和2.0at。％的Ce〜（3+），通过Ce的去活化作用，估计其分支比提高了40倍以上。 Er〜（3+）〜4I_（11/2）电平上的〜（3+）。四元掺杂的CaF_2系统显示出在1.5μm范围内实现高激光性能的巨大潜力。

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来源
《Optical Materials》 |2007年第8期|p.932-935|共4页
作者
Jun Xu; Liangbi Su; Hongjun Li; Dan Zhang; Lei Wen; Hui Lin; Guangjun Zhao;
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作者单位

Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Qinghe Road No. 390 Jiading Shanghai 201800 China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
erbium; calcium fluoride; solid-state laser; deactivator; sensitizer;

机译：铒;氟化钙;固态激光器减活剂敏化剂;

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High quantum fluorescence yield of Er~(3+) at 1.5 μm in an Yb~(3+), Ce~(3+)-codoped CaF_2 crystal

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