Host-dependent optical transitions of Er3+ ions in lead-germanate and lead-tellurium-germanate glasses

被引：179

作者：

Pan, ZD ^{[1
]}

Morgan, SH ^{[1
]}

Dyer, K ^{[1
]}

Ueda, A ^{[1
]}

Liu, HM ^{[1
]}

机构：

[1] UNIV PUERTO RICO,DEPT PHYS,MAYAGUEZ,PR 00709

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 79卷 / 12期

关键词：

D O I：

10.1063/1.362621

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Differential scanning calorimetry, Raman scattering, optical absorption, and upconversion of infrared to green luminescence have been studied for Er3+-doped lead-germanate glass 55GeO(2) . 20PbO . 10BaO . 10ZnO . 5K(2)O (GPBZK) and lead-tellurium-germanate glass 30GeO(2) . 30PbO . 30TeO(2) . 10CaO (GPTC). Judd-Ofelt intensity parameters of Er3+ in the two host glasses were determined and used to calculate radiative transition rates and lifetimes. Values of the radiative quantum yield of the S-4(3/2)-->I-4(15/2) transition and the infrared (797 nm) to green (547 nm) upconversion efficiency of Er3+ Were obtained. It has been found that the S-4(3/2)-->I-4(15/2) radiative transition rate of Er3+ in GPTC glass is about twice that in the GPBZK glass and the upconversion efficiency in the GPTC glass is about four times larger than that in the GPBZK glass. These host-dependent properties are mainly attributed to the enhanced local field and the reduced multiphonon rate in lead-tellurium-germanate glass compared to lead-germanate glass. (C) 1996 American Institute of Physics.

引用

页码：8906 / 8913

页数：8

共 39 条

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