| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1236572 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2006 | 6 Pages |
Abstract
We present the results of a study that uses theoretical and experimental methods to investigate the characteristics of the upconversion luminescence of Tm3+/Yb3+ codoped TeO2-BiCl3 glass system as a function of the BiCl3 fraction. These glasses are potentially important in the design of upconversion fiber lasers. Effect of local environment around Tm3+ on upconversion fluorescence intensity was analyzed by theoretical calculations. The structure and spectroscopic properties were investigated in the experiments by measuring the Raman spectra, IR transmission spectra, and absorption and fluorescence intensities at room temperature. The results indicate that blue luminescence quantum efficiency increases with increasing BiCl3 content from 10 to 60Â mol%, which were interpreted by the increase of asymmetry of glass structure, decrease of phonon energy and removing of OHâ groups.
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Physical Sciences and Engineering
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Authors
Guonian Wang, Shixun Dai, Junjie Zhang, Lei Wen, Jianhu Yang, Zhonghong Jiang,