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This paper reports on the influence of energy acceptors Ce3+ ions on the upconversion and 1.5μm emission properties of fluorophosphate glasses codoped with Er3+/Yb3+. The energy transfer mechanism has been discussed based on the energy matching and the energy level. The Ce3+ ions are excited from the 2F5/2 level to the 2F7/2 level due to the non-radiatively energy transfer process of the Er3+ ions from the 4I11/2 level to the 4I13/2 level. The upconversion luminescence intensities of the Er3+ are decreased quite significantly owing to this energy transfer process. Meanwhile, the luminescence intensities, peak stimulated emission cross sections, and lifetimes of the 4I13/2 level of Er3+/Yb3+-codoped fluorophosphate glasses increase largely with the introduction of the Ce3+ ions at the proper concentration of 1.11×1020cm-3.
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Keywords:
- fluorophosphate glasses /
- spectroscopic properties /
- optical fiber amplifier /
- Er3+ and Ce3+
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Ce3+对Er3+/Yb3+共掺氟磷酸盐玻璃光谱性质的影响
- 收稿日期: 2005-08-10
- 修回日期: 2006-03-27
- 刊出日期: 2006-04-05
English Abstract
Effects of Ce3+ ions on the spectroscopic properties of fluorophosphate glasses codoped with Er3+/Yb3+
- Received Date:
10 August 2005
- Accepted Date:
27 March 2006
- Published Online:
05 April 2006
Abstract: This paper reports on the influence of energy acceptors Ce3+ ions on the upconversion and 1.5μm emission properties of fluorophosphate glasses codoped with Er3+/Yb3+. The energy transfer mechanism has been discussed based on the energy matching and the energy level. The Ce3+ ions are excited from the 2F5/2 level to the 2F7/2 level due to the non-radiatively energy transfer process of the Er3+ ions from the 4I11/2 level to the 4I13/2 level. The upconversion luminescence intensities of the Er3+ are decreased quite significantly owing to this energy transfer process. Meanwhile, the luminescence intensities, peak stimulated emission cross sections, and lifetimes of the 4I13/2 level of Er3+/Yb3+-codoped fluorophosphate glasses increase largely with the introduction of the Ce3+ ions at the proper concentration of 1.11×1020cm-3.