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1. 中国科学院, 研究生院 北京,100049
2. 中国科学院长春光学精密机械与物理研究所, 激发态物理重点实验室,吉林 长春,130033
Published:20 March 2008,
Received:21 May 2007,
Revised:24 December 2007,
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骆永石, 张家骅, 王笑军. 引入P<sub>2</sub>O<sub>5</sub>的铒掺杂碲钨酸盐玻璃光谱性质[J]. 发光学报, 2008,29(2): 274-278
LUO Yong-shi, ZHANG Jia-hua, WANG Xiao-jun. Spectroscopic Properties of the Er<sup>3+</sup> Doped Tungsten-tellurite Glasses with P<sub>2</sub>O<sub>5</sub>[J]. Chinese Journal of Luminescence, 2008,29(2): 274-278
骆永石, 张家骅, 王笑军. 引入P<sub>2</sub>O<sub>5</sub>的铒掺杂碲钨酸盐玻璃光谱性质[J]. 发光学报, 2008,29(2): 274-278 DOI:
LUO Yong-shi, ZHANG Jia-hua, WANG Xiao-jun. Spectroscopic Properties of the Er<sup>3+</sup> Doped Tungsten-tellurite Glasses with P<sub>2</sub>O<sub>5</sub>[J]. Chinese Journal of Luminescence, 2008,29(2): 274-278 DOI:
为克服碲酸盐玻璃中Er
3+
的
4
I
11/2
-
4
I
13/2
无辐射速率较小
不利于980nm激光泵浦下实现1.5μm光放大的缺点
在TeO2-WO3-Li2O玻璃中引入了P
2
O
5
组分。考察P
2
O
5
摩尔分数对Er
3+
的1.5μm红外发射、红绿光上转换发光及
4
I
13/2
能级寿命的影响。利用J-O理论对不同P
2
O
5
摩尔分数玻璃样品的吸收光谱进行分析
得到各能级辐射跃迁几率
计算了Er
3+
在样品中
4
I
13/2
能级辐射跃迁寿命。重点研究了不同样品中Er
3+
的
4
I
11/2
-
4
I
13/2
无辐射跃迁速率随P
2
O
5
摩尔分数的变化
可以看出在含6%P
2
O
5
玻璃中Er
3+
的
4
I
11/2
-
4
I
13/2
无辐射跃迁速率约为不含P
2
O
5
玻璃中的3.5倍
同时1.5μm红外发射效率略有提高
另外红绿光上转换发射得到了抑制。因此
含P
2
O
5
的铒掺杂碲钨酸盐玻璃更有利于在980nm激光泵浦下实现1.5μm光放大。
In recent years
Er
3+
-doped glasses with a broad 1.5 μm emission band originating from
4
I
13/2
-
4
I
15/2
transition of Er
3+
have been extensively investigated for use in erbium-doped fiber amplifiers (EDFA). Among the reported materials
Er
3+
-doped telluride glasses exhibited a wide 1.5 μm emission band and a large stimulated emission section and high 1.5 μm emission efficiency. However
as a host for EDFA
telluride glass has some major drawbacks. One of them is the phonon energy of the glass is about 770 cm
-1
which leads to the
4
I
11/2
-
4
I
13/2
nonradiative relaxation rate too slow to allow efficient pumping at 980 nm. To overcome this drawback
S. Shen
et al
. added WO3
with vibronic energy of W-O bond of 920 cm
-1
into the glass to form tungsten-tellurite glasses. This composition modification increased the nonradiative relaxation rate of the
4
I
11/2
-
4
I
13/2
transition and made improvement of population feeding efficiency of
4
I
13/2
from the
4
I
11/2
level pumped at 980 nm. In this paper
P
2
O
5
was introduced into Er
3+
-doped tungsten-tellurite glasses. Emission
absorption and upconversion spectra of the glasses are studied. It is observed that the nonradiative relaxation rate of
4
I
11/2
-
4
I
13/2
transitions and the 1.5 μm emission efficiency increases with the increase of P
2
O
5
content
while
the upconversion luminescence was suppressed. The nonradiative relaxation rate of
4
I
11/2
-
4
I
13/2
transition in a glass with 6% P
2
O
5
is about 3.5 times greater than that without P
2
O
5
. The present results indicate that telluride glasses with P
2
O
5
addition may be a promising candidate medium for broadband erbium-doped fiber amplifiers with good performance under the pumping of 980 nm.
光学材料碲钨酸盐玻璃P2O5无辐射跃迁
optical materialtungsten-telluride glassesP2O5nonradiative decay
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Ren G Z,Chen B J,Yang Y M,et al.Effect of hydroxyl on the up-conversion luminescence of Er3+-doped oxyfluoride tellurite glasses[J].Chin.J.Lumin.(发光学报),2006,27(3):325-330 (in Chinese).
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