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1. 宁波大学 光电子功能材料重点实验室,浙江 宁波,315211
2. 中国科学院 宁波材料技术与工程研究所,浙江 宁波,315211
3. 大连海事大学 物理系, 辽宁 大连 116026
纸质出版日期:2016-10-5,
收稿日期:2016-5-5,
修回日期:2016-6-15,
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汤庆阳, 王成, 夏海平等. Er<sup>3+</sup>掺杂Na<sub>5</sub>Lu<sub>9</sub>F<sub>32</sub>单晶体的红外光学特性[J]. 发光学报, 2016,37(10): 1189-1194
TANG Qing-yang, WANG Cheng, XIA Hai-ping etc. Infrared Optical Properties of Er<sup>3+</sup> Doped Na<sub>5</sub>Lu<sub>9</sub>F<sub>32</sub> Single Crystal[J]. Chinese Journal of Luminescence, 2016,37(10): 1189-1194
汤庆阳, 王成, 夏海平等. Er<sup>3+</sup>掺杂Na<sub>5</sub>Lu<sub>9</sub>F<sub>32</sub>单晶体的红外光学特性[J]. 发光学报, 2016,37(10): 1189-1194 DOI: 10.3788/fgxb20163710.1189.
TANG Qing-yang, WANG Cheng, XIA Hai-ping etc. Infrared Optical Properties of Er<sup>3+</sup> Doped Na<sub>5</sub>Lu<sub>9</sub>F<sub>32</sub> Single Crystal[J]. Chinese Journal of Luminescence, 2016,37(10): 1189-1194 DOI: 10.3788/fgxb20163710.1189.
采用坩埚下降法成功地生长了Er
3+
离子掺杂的Na
5
Lu
9
F
32
(NLF)单晶体。测定了单晶体在400~2 500 nm波段的吸收光谱与2.5~25 m红外波段的透过光谱。Na
5
Lu
9
F
32
单晶体在400~7 150 nm宽波段范围具有好的光学透过性,在该波段的透过率达到90%。在透过光谱中几乎观察不到2.7 m中红外波段的吸收,说明单晶体中OH
-
离子的含量极低。根据测定的吸收光谱,通过Judd-Ofelt理论计算了Er
3+
在单晶体中的光学强度参数
t
(
2
=2.08,
4
=2.07,
6
=0.75),以及相应的辐射跃迁速率、荧光分支比和荧光寿命。根据Futchbauer-Ladenburg公式估算了样品的发射截面大约分别为1.4210
-20
cm
2
(
4
I
13/2
4
I
15/2
)和1.6610
-20
cm
2
(
4
I
11/2
4
I
13/2
)。在980 nm半导体激光器(LD)激发下,研究了单晶体的近红外1.5 m与中红外2.7 m的发射光谱特性。
Er
3+
doped Na
5
Lu
9
F
32
single crystal was successfully grown by Bridgman method. The absorption spectra of the single crystal from 400 nm to 2 500 nm and the transmission characteristics from 2.5 m to 25 m were measured. Na
5
Lu
9
F
32
single crystal possessed high optical transmittance from 400 nm to 7 150 nm wide band
and the transmittance reached to 90%. Almost no absorption of 2.7 m band was observed. It indicated that the content of OH
-
ion was very low in the single crystal. The intensity parameters
t
(
2
=2.08
4
=2.07
6
=0.75) were calculated by using Judd-Ofelt theory based on the absorption spectrum. The radiative transition rates
branching ratios and radiative lifetimes were also obtained. The emission cross sections of the sample were 1.4210
-20
cm
2
(
4
I
13/2
4
I
15/2
) and 1.6610
-20
cm
2
(
4
I
11/2
4
I
13/2
) estimated by Futchbauer-Ladenburg formula. The emission spectra of 1.5 m and 2.7 m band were investigated under 980 nm LD.
Er3+Na5Lu9F32单晶体近红外中红外
Er3+Na5Lu9F32 single crystalnear-infraredmid-infrared
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