Effect of Ce on the spectroscopic properties in Er doped TeO2-GeO2-Nb2O5-Li2O glasses |
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| Authors: | Xiang Shen Qiuhua Nie Tiefeng Xu Shixun Dai Guangpo Li Xunsi Wang |
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| Institution: | Faculty of Information Science and Engineering, Ningbo University, Zhejiang 315211, Ningbo, Zhenjiang Province, China |
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| Abstract: | The Ce3+ ion was introduced into Er3+ doped TeO2-GeO2-Nb2O5-Li2O (TGNL) glass to improve the 1.5 μm fluorescence characteristics. As increasing of Ce3+ concentration, the lifetime of Er3+:4I11/2 level is shortened form 360 to 225 μs, while the Er3+:4I13/2 level remains unchanged. Accordingly, the upconversion fluorescence (blue, green and red) was quenched. Improved 1.5 μm emission is obtained and the reason is ascribed to the increase of nonradiative rate between the 4I11/2 and 4I13/2 level of the Er3+ ions. |
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| Keywords: | Er3+/Ce3+-codoped glass Optical materials Judd-Ofelt theory Optical amplifier |
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