Up-conversion luminescence in Er3+/Yb3+-codoped Gd3SC2Ga3O12 laser crystals

被引：2

作者：

Luo Jian-Qiao ^{[1
,2
]}

Sun Dun-Lu ^{[1
]}

Zhang Qing-Li ^{[1
]}

Liu Wen-Peng ^{[1
,2
]}

Gu Chang-Jiang ^{[1
]}

Wu Lu-Sheng ^{[1
]}

Yin Shao-Tang ^{[1
]}

机构：

[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

ACTA PHYSICA SINICA | 2008年 / 57卷 / 12期

基金：

中国国家自然科学基金;

关键词：

photoluminescence; up-conversion; Er3+ :Gd3Sc2Ga3O12; Er3+ /Yb3+ :Gd3Sc2Ga3O12;

D O I：

10.7498/aps.57.7712

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Er3+ /Yb3+ Gd3Sc2Ga3O12 and Er3+ : Gd3SC2Ga3O12 crystals have been grown by Czoehralski method. The absorption spectra from 320 to 1700 nm and the up-conversion fluorescence spectra from 500 to 750 nm of them were investigated at room temperature, respectively. The possible up-conversion luminescence mechanisms in Er3+ /Yb3+ -codoped crystals and their influences on the 2. 8 mu m laser emission were discussed. Experimental results show that the absorption of Er3+: Gd3SC2Ga3O12 around 966 nm and its bandwidth are remarkably increased by Yb3+ sensitizing. Under 940 run excitation, the up-conversion luminescence intensity of Er3+ /Yb3+ : Gd3SC2Ga3O12 is Much stronger than that of Er3+ : Gd3Sc2Ga3O12. It demonstrates that there exist effective energy transfer processes between Yb3+ and Er3+ and the dominant mechanism of up-conversion may be the energy transfer processes of Yb3+ -Er3+ and Er3+ - Er3+.

引用

页码：7712 / 7716

页数：5

共 19 条

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