Chin. Phys. Lett.  2004, Vol. 21 Issue (9): 1799-1801    DOI:
Original Articles |
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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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.
Keywords: 73.43.Fj      74.25.Gz      73.61.Jc      76.30.Kg     
Published: 01 September 2004
PACS:  73.43.Fj (Novel experimental methods; measurements)  
  74.25.Gz (Optical properties)  
  73.61.Jc (Amorphous semiconductors; glasses)  
  76.30.Kg (Rare-earth ions and impurities)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I9/01799
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