Enhancement of the 1.53 (mu)m fluorescence and energy transfer in Er(3+)/Yb(3+)/Ce(3+) tri-doped WO(3) modified tellurite-based glass

• Published in: Journal of alloys and compounds Vol. 581; pp. 534 - 541
• Main Authors: Yin, Dandan, Peng, Shengxi, Qi, Yawei, Zheng, Shichao, Zhou, Yaxun, Wang, Xunsi
• Format: Journal Article
• Language: English
• Published: 25.12.2013
• Subjects: Band spectra
• ISSN: 0925-8388

For the first time, the WO(3) oxide with relatively high phonon energy was introduced into the Er(3+)/Yb(3+)/Ce(3+) tri-doped tellurite-based glasses with composition of TeO(2)-Bi(2)O(3)-TiO(2) to improve the 1.53 (mu)m band fluorescence emission. The X-ray diffraction (XRD) curves, Raman spectra, absorption spectra and 1.53 (mu)m band fluorescence spectra were measured, along with the Judd-Ofelt intensity parameters, stimulated emission and absorption cross-sections, and radiative quantum efficiencies were calculated to evaluate the effects of WO(3) amount on the glass structure and spectroscopic properties especially the 1.53 (mu)m band fluorescence. It is shown that the introduction of an appropriate amount of WO(3) oxide can further improve the 1.53 (mu)m band fluorescence intensity through an enhanced phonon-assisted energy transfer between Er(3+)/Ce(3+) ions and the energy transfer mechanisms between Er(3+)/Yb(3+) (Er(3+)/Ce(3+)) ions are investigated quantitatively in detail by calculating energy transfer microparameters and phonon contribution ratios. The results indicate that the prepared Er(3+)/Yb(3+)/Ce(3+) tri-doped tellurite glass with an appropriate amount of WO(3) oxide is a potential gain medium applied for the 1.53 (mu)m band broad and high-gain EDFA.