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

✍ Scribed by Qiuhua Nie; Longjun Lu; Shixun Dai; Tiefeng Xu; Xiang Shen; Xudong Zhang; Xiaowei Liang; Xianghua Zhang

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 193 KB
• Volume: 392
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.11.036

✦ Synopsis

A series of Er 3+ -doped 50Bi 2 O 3 -(50-x)B 2 O 3 -xGeO 2 +0.5 wt% Er 2 O 3 (x ¼ 0, 5, 10, 15, 20 mol%) glasses were prepared. The thermal stability, absorption spectra, emission spectra and lifetime of the 4 I 13/2 level of Er 3+ ions were measured and studied. It is found that the absorption cross-section of Er 3+ , emission intensity and lifetime of the 4 I 13/2 level of Er 3+ increase with increasing GeO 2 content in the glass composition, while the fluorescence full-width at half-maximum (FWHM) at 1.5 mm of Er 3+ is about 79 nm in x ¼ 20 mol% glass sample under 970 nm pump. The obtained data suggest that this system glass can be used as a candidate host material for potential broadband optical amplifiers.