Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1236031 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2007 | 5 Pages |
Abstract
The B2O3 was introduced into the Er3+ doped TeO2-ZnO-Na2O glass to increase the phonon energy of the host. The effect of B2O3 on the non-radiative rate of the 4I11/2 â 4I13/2 transition of Er3+, the lifetime of the 4I11/2 and 4I13/2 levels, the green and red upconversion emissions intensity, and the 4I13/2 â 4I15/2 emission intensity was discussed. The results show that the phonon energy of boro-tellurite glass is close to that of germanate glass and is quite smaller than that of borate glass. The lifetime of 4I11/2 level and the upconversion emissions decrease with increasing B2O3 concentration. The higher OH group concentration presented in the boro-tellurite glass may shorten the lifetime of 4I13/2 level and also reduce the quantum efficiency of 4I13/2 â 4I15/2 emission. The future dehydrating procedures are suggested to enhance the efficiency of amplification at 1.5 μm band.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Xiang Shen, Qiuhua Nie, Tiefeng Xu, Shixun Dai, Xunsi Wang,