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

• 作 者: DONG Liqiang HUANG Shihua WEN
• 机 构: Key Laboratory of Luminescence and Optical Information(Ministry of Education),Research Institute of
• 出 处: 稀土学报（英文版）
• 发表日期: 2004年期
• 关键词: upeonversion saturation rate equations rare earths

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 ob-served 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.