Spectroscopic properties of Er³⁺-doped and Er³⁺/Yb³⁺-codoped PbF₂–MOx (M = Te, Ge, B) oxyfluoride glasses

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• 作者：Zhengang Shang ; Guozhong Ren ; Qibin Yang ; Changfu Xu ; Yunxin Liu ; Yong Zhang ; Qun Wu
• 关键词：Laser materials ; Luminescence ; Absorption ; Raman spectra
• 刊名：Journal of Alloys and Compounds
• 出版年：2008
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：28 July 2008
• 卷：460
• 期：1-2
• 页码：539-543
• 文件大小：222 K

摘要

A series of Er³⁺-doped and Er³⁺/Yb³⁺-codoped lead germanate (GP), lead tellurite (TP) and lead borate (BP) transparent oxyfluoride glasses were synthesized. Spectroscopic characteristics of these materials were systemically measured. The Judd–Ofelt parameters were calculated according to absorption spectra. F⁻ ions have a strong effect on refractive index (n) and phonon energy of the host. Intense red and green upconversion is closely related to phonon energy, J–O parameters and sensitizer. The GPEY-2 glass (53GeO₂–43PbF₂–0.5Er₂O₃–2Yb₂O₃) shows good transparency and fairly strong upconversion emissions.