Cooperative energy transfer in Tm3＋and Yb3＋ co-doped phosphate glasses

An efficient near-infrared （NIR） quantum cutting （QC） in Tm3＋ and Yb3＋ co-doped phosphate glasses was demonstrated, which involved the emission of two NIR photons from an absorbed visible photon via a cooperative energy transfer （CET） from Tm3＋ to Yb3＋ ions. Judd-Ofelt （J-O） theory was used to calcu...

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Bibliographic Details
Published in:Journal of rare earths 2013-02, Vol.31 (2), p.164-168
Main Author: 徐波 杨斌 张约品 夏海平 王金浩
Format: Article
Language:English
Subjects:
Computational efficiency
Cutting
Emission
Energy transfer
I-H model
Judd-Ofelt理论
Mathematical models
Phosphate glass
Photons
quantum cutting
Rare earth metals
rare earths
共掺
合作
磷酸盐玻璃
能量传递
能量转移
辐射跃迁
镱离子
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Summary:An efficient near-infrared （NIR） quantum cutting （QC） in Tm3＋ and Yb3＋ co-doped phosphate glasses was demonstrated, which involved the emission of two NIR photons from an absorbed visible photon via a cooperative energy transfer （CET） from Tm3＋ to Yb3＋ ions. Judd-Ofelt （J-O） theory was used to calculate the intensity parameters （ 2 , 4 , 6 ）, the radiative transition rates （Ar ）, and radiative transition lifetime （τ rad ） of Tm3＋ . Based on Inokuti-Hirayama＇s model, the energy transfer processes were studied and results indicated that the energy transfer of the electric dipole-dipole （Edd） was dominant in this system. Quantum efficiency related to Yb 3＋ concentration was calculated, and the maximum QE efficiency reached 169.8%.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(12)60252-X