Preparation and spectral characterization of new Er3+-doped TeO2-B2O3-WO3-ZnO-ZnS glasses

• 来源期刊: 中国物理（英文版）
• 关键词: spectral properties Er3+ laserglass
• 年，卷（期）: 2004,（10）
• 页码范围: 1674-1678
• 页数: 5页
• 语种: 英文

摘要

Erbium-doped TeO2-based oxysulfide glasses have been prepared in argon atmosphere in graphite crucibles. The results of thermal analysis and spectroscopic properties of Er3+ have been studied in terms of sulfide influence. As a function of composition, we have measured principally the optical absorption, spontaneous emission, and lifetime of the materials. Judd-Ofelt theory was introduced to calculate bandwidth and emission cross-section of Er3+. The results demonstrate that addition of sulfide in tellurite glasses results in broad emission spectra, with high emission cross-section, slightly low emission lifetime and a comparatively high thermal stability as pure oxide glasses.