Study on the green upconversion saturation in Er³⁺ doped oxyfluoride tellurite glass

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• 作者：Liqiang DONG ; Shihua HUANG ; Hongyu WEN ; Kai KANG ; Xiaoxia DUAN
• 关键词：upconversion ; saturation ; rate equations ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2009
• 出版时间：April 2009
• 年：2009
• 卷：27
• 期：2
• 页码：334-337
• 全文大小：357 K

文摘

The upconversion emission spectra of Er³⁺ doped oxyfluoride tellurite glasses excited by 808 nm laser diode (LD) were measured. The dependence of 550 nm upconversion emission on the excitation intensity was analyzed. Quadratic intensity dependence was only observed at weak excitation intensity. With increasing the excitation intensity, saturation was turned out. The experimental results were fitted to a model based on the rate equations.