| Original Articles |
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Thermal Stability and Spectroscopic Properties of New Er3+/Yb3+-Codoped Tellurite Glasses |
| GAO Yuan;NIE Qiu-Hua;XU Tie-Feng;SHEN Xiang |
| College of Information Science and Engineering, Ningbo University, Ningbo 315211 |
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| Cite this article: |
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GAO Yuan, NIE Qiu-Hua, XU Tie-Feng et al 2004 Chin. Phys. Lett. 21 1799-1801 |
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Abstract A series of new Er3+/Yb3+-codoped 70TeO2--5Li2O--(25-x)B2O3--xGeO2 (TLBG, x=0, 5, 10, 15, 20mol%) glasses are prepared. The thermal stability and spectroscopic properties of TLBG glasses are studied. It is found that these glasses have the better thermal stability ((Tx-Tg)>150 °C) compared with 75TeO2--20ZnO--5Na2O (TZN) glass. The fluorescence full width at half maximum (FWHM) is about 77nm, while the emission intensity and the quantum efficiency of the 4I13/2 level of Er3+ increase with the increasing GeO2 content. The maximum quantum efficiency and stimulated emission cross-section of Er3+ calculated from the McCumber theory are 93.82% and 9.0×10-21cm2, respectively. The products of FWHM and σpeake of Er3+ in TLBG glasses are larger than those in other reported glasses. The obtained data indicate that this kind of TLBG glasses is a promising candidate host material for Er3+-doped broadband amplifiers.
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| Keywords:
73.43.Fj
74.25.Gz
73.61.Jc
76.30.Kg
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Published: 01 September 2004
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| PACS: |
73.43.Fj
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(Novel experimental methods; measurements)
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74.25.Gz
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(Optical properties)
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73.61.Jc
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(Amorphous semiconductors; glasses)
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76.30.Kg
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(Rare-earth ions and impurities)
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