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1.同济大学 物理科学与工程学院, 高等研究院, 上海 200092
2.江苏师范大学物理电子与工程学院 江苏省先进激光材料与器件重点实验室, 江苏 徐州 221116
3.中国科学院上海硅酸盐研究所 高性能陶瓷和超微结构国家重点实验室, 上海 201899
Published:05 November 2022,
Received:06 June 2022,
Revised:19 June 2022,
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刘坚,王无敌,宋青松等.Tb3+离子掺杂CaF2晶体的生长和发光性能[J].发光学报,2022,43(11):1750-1757.
LIU Jian,WANG Wu-di,SONG Qing-song,et al.Growth and Luminescence Properties of Tb3+ Ions Doped CaF2 Crystals[J].Chinese Journal of Luminescence,2022,43(11):1750-1757.
刘坚,王无敌,宋青松等.Tb3+离子掺杂CaF2晶体的生长和发光性能[J].发光学报,2022,43(11):1750-1757. DOI: 10.37188/CJL.20220229.
LIU Jian,WANG Wu-di,SONG Qing-song,et al.Growth and Luminescence Properties of Tb3+ Ions Doped CaF2 Crystals[J].Chinese Journal of Luminescence,2022,43(11):1750-1757. DOI: 10.37188/CJL.20220229.
使用温梯法生长了10%Tb,
x
%Y∶CaF
2
(
x
= 0,3,5,10)系列晶体。通过X射线衍射分析了晶体结构,结果表明高浓度的稀土离子掺杂使得晶胞参数增大,但是仍然保持CaF
2
的萤石立方结构。采用吸收光谱、发射光谱及荧光衰减曲线等测试数据对其发光性能进行了研究。通过J⁃O理论计算,共掺Y
3+
离子后,光谱品质因子
Ω
4
/
Ω
6
由0.75增加到0.80。F‑L公式计算得到10%Tb∶CaF
2
绿光545 nm处和黄光583 nm处的发射截面分别为0.89×10
-21
cm
2
和0.082×10
-21
cm
2
,10%Tb,10%Y∶CaF
2
在绿光545 nm处和黄光583 nm处的发射截面分别为0.89×10
-21
cm
2
和0.077×10
-21
cm
2
。并且Tb
3+
离子
5
D
4
能级的荧光寿命都在5 ms以上,并不存在高浓度掺杂导致的荧光寿命降低现象,长荧光寿命意味着Tb
3+
离子绝佳的储能能力。实验结果表明,Tb∶CaF
2
及Tb,Y∶CaF
2
晶体是有极大潜力实现可见激光输出的激光增益介质。
A series of 10%Tb∶
x
%Y∶CaF
2
(
x
= 0, 3, 5, 10) crystals have been successfully grown by the temperature gradient technique(TGT). The crystal structure was analyzed by X-ray diffraction, and the results showed that the high concentration of rare earth ion doping increased the unit cell parameters, but still maintained the fluorite cubic structure of CaF
2
. The absorption spectra, fluorescence spectra, and fluorescence decay curves were measured and analyzed at room temperature. By co-doping Y
3+
ions, the spectral quality factor
Ω
4
/
Ω
6
increased from 0.75 to 0.80. Using F-L formula, the emission cross sections of 10%Tb∶CaF
2
were calculated to be 0.89×10
-21
cm
2
and 0.082×10
-21
cm
2
for the 545 nm and 587 nm, respectively, and the emission cross sections of 10% Tb,10%Y∶CaF
2
were calculated to be 0.89×10
-21
cm
2
and 0.077×10
-21
cm
2
for the 545 nm and 587 nm. The fluorescence lifetime of
5
D
4
level is more than 5 ms, and there is no fluorescence lifetime quenching phenomenon caused by high concentration doping. The long fluorescence lifetime means that Tb
3+
ion has excellent energy storage capacity. The experimental results show that Tb∶CaF
2
and Tb,Y∶CaF
2
crystals are gain mediums with great potential to realize visible laser output.
Tb∶CaF2可见激光光谱性能J-O 理论
Tb∶CaF2visible laserspectral propertiesJ-O theory
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