Investigation of thermal stability and spectroscopic properties in Er3+ doped bismuth-boron-germanium glasses

A series of Er3+-doped 50Bi2O3-(50-x)B2O3-xGeO2+0.5wt% Er2O3 (x=0, 5, 10, 15, 20mol%) glasses were prepared. The thermal stability, absorption spectra, emission spectra and lifetime of the 4I13/2 level of Er3+ ions were measured and studied. It is found that the absorption cross-section of Er3+, emi...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2007-04, Vol.392 (1-2), p.195-199
Hauptverfasser: Nie, Qiuhua, Lu, Longjun, Dai, Shixun, Xu, Tiefeng, Shen, Xiang, Zhang, Xudong, Liang, Xiaowei, Zhang, Xianghua
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Sprache:eng
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Zusammenfassung:A series of Er3+-doped 50Bi2O3-(50-x)B2O3-xGeO2+0.5wt% Er2O3 (x=0, 5, 10, 15, 20mol%) glasses were prepared. The thermal stability, absorption spectra, emission spectra and lifetime of the 4I13/2 level of Er3+ ions were measured and studied. It is found that the absorption cross-section of Er3+, emission intensity and lifetime of the 4I13/2 level of Er3+ increase with increasing GeO2 content in the glass composition, while the fluorescence full-width at half-maximum (FWHM) at 1.5mum of Er3+ is about 79nm in x=20mol% glass sample under 970nm pump. The obtained data suggest that this system glass can be used as a candidate host material for potential broadband optical amplifiers.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2006.11.036