2.05 μm emission properties and energy transfer mechanism of germanate glass doped with Ho3+, Tm3+, and Er3+

被引：41

作者：

Xu, Rongrong ^{[1
,2
]}

Wang, Meng ^{[1
,2
]}

Tian, Ying ^{[1
,2
]}

Hu, Lili ^{[1
]}

Zhang, Junjie ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Lasers, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 05期

关键词：

MULTIPHONON RELAXATION; OPTICAL-PROPERTIES; MCCUMBER THEORY; IONS; ABSORPTION; FLUORESCENCE; PERFORMANCE; INTENSITIES; VALIDITY;

D O I：

10.1063/1.3553877

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new GeO2-Ga2O3-Na2O-BaO-La2O3 germanate glass doped with Ho2O3, Tm2O3, and Er2O3 has been investigated for application as a laser material at the 2 mu m region. The spectroscopic properties and energy transfer mechanisms of Ho3+ sensitized by Tm3+ and Er3+ are analyzed. Based on the measurement of absorption spectra, the Judd-Ofelt intensity parameters, radiation emission probability, branching ratio, and lifetime of Ho3+ are calculated to evaluate the spectroscopic properties. The maximum value of emission cross section of Ho3+ around 2.05 mu m is 8.003x10(-21) cm(2), which indicates that the germanate glass may provide high gain as a good medium in high-power level laser system. It is also found that the 2.05 mu m emission of Ho3+:I-5(7)-> I-5(8) can be greatly enhanced by adding the proper amount of Er2O3 and Tm2O3 under excitation at 808 nm. With the large energy transfer coefficient, the high efficient energy transfer process among Ho3+, Tm3+, and Er3+ ions is proven. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553877]

引用

页数：7

共 34 条

[1] Single-frequency thulium-doped distributed-feedback fiber-laser [J].