Abstract Er$^{3+}$-doped lead chloride tellurite glasses were prepared using the conventional melting and quenching method. The absorption spectra were measured and the Judd－Ofelt analysis was performed. The spectroscopic parameters such as the intensity parameters, transition probabilities, radiative lifetimes, and branching ratios were obtained. Intense infrared emission and visible upconversion luminescence under 976 nm excitation were observed. For the 1.55μm emission, the full width at half maximum and the emission cross sections are more than 50 nm and $8\times10^{- 20}$cm$^2$, respectively. Three efficient visible luminescences centred at 525, 547, and 658nm are assigned to the transitions from the excited states $^{2}H_{11/2}$, $^{4}S_{3/2}$, and $^{4}F_{9/2}$ to the ground state $^{4}I_{15/2}$, respectively. The upconversion mechanisms and the power-dependent intensities are also discussed and evaluated.
Received: 28 May 2003
Revised: 23 June 2003
Accepted manuscript online:
(Amorphous materials; glasses and other disordered solids)
Fund: Project supported by the Science and Technology Foundation of Shanghai (022261046) and the National Natural Science Foundation of China (60207006).
Cite this article:
Wen Lei (温磊), Li Shun-Guang (李顺光), Huang Guo-Song (黄国松), Hu Li-Li (胡丽丽), Jiang Zhong-Hong (姜中宏) Optical transitions and upconversion properties of Er3+-doped chloride tellurite glasses 2004 Chinese Physics 13 258
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