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Enhanced 1.8 μm emission in Er3+/Tm3+ co-doped lead silicate glasses under different excitations for near infrared laser

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【作者】 朱婷婷； 唐国武； 陈晓东； 孙敏； 钱奇； 杨中民；

【Author】 ZHU Tingting;TANG Guowu;CHEN Xiaodong;SUN Min;QIAN Qi;YANG Zhongmin;State Key Laboratory of Luminescent Materials and Devices, Institute of Optical Communication Materials, South China University of Technology;Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, South China University of Technology;Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology;

【机构】 State Key Laboratory of Luminescent Materials and Devices, Institute of Optical Communication Materials, South China University of Technology； Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, South China University of Technology； Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology；

【摘要】 A detailed study of the fluorescence emission properties and energy transfer mechanism in Er3+/Tm3+ co-doped lead silicate glasses was reported. Enhanced near infrared 1.8 μm and visible up-conversion emissions were investigated under 808 and 980 nm excitations, respectively. The energy transfer mechanism between Er3+ and Tm3+ was analyzed according to the absorption spectra, the emission spectra and the level structures of Er3+ and Tm3+. The energy transfer efficiency between Er3+ and Tm3+ reached 68.1% in the Er3+/Tm3+ co-doped lead silicate glasses when pumped by 808 nm laser diode. Based on the absorption spectra, the Judd-Ofelt parameters, spontaneous emission probability, absorption and emission cross sections, gain coefficients were calculated and analyzed. It was found that the calculated emission cross section and the maximum gain coefficient around 1.8 μm were 4.9×10–21cm2 and 1.12 cm–1, respectively. These results indicated that the Er3+/Tm3+ co-doped lead-silicate glasses had potential application in near infrared lasers.

【Abstract】 A detailed study of the fluorescence emission properties and energy transfer mechanism in Er3+/Tm3+ co-doped lead silicate glasses was reported. Enhanced near infrared 1.8 μm and visible up-conversion emissions were investigated under 808 and 980 nm excitations, respectively. The energy transfer mechanism between Er3+ and Tm3+ was analyzed according to the absorption spectra, the emission spectra and the level structures of Er3+ and Tm3+. The energy transfer efficiency between Er3+ and Tm3+ reached 68.1% in the Er3+/Tm3+ co-doped lead silicate glasses when pumped by 808 nm laser diode. Based on the absorption spectra, the Judd-Ofelt parameters, spontaneous emission probability, absorption and emission cross sections, gain coefficients were calculated and analyzed. It was found that the calculated emission cross section and the maximum gain coefficient around 1.8 μm were 4.9×10–21cm2 and 1.12 cm–1, respectively. These results indicated that the Er3+/Tm3+ co-doped lead-silicate glasses had potential application in near infrared lasers.

【关键词】 lead silicate glass； Er3+/Tm3+ co-doping； 1.8 μm emission； energy transfer； rare earths；
【Key words】 lead silicate glass； Er3+/Tm3+ co-doping； 1.8 μm emission； energy transfer； rare earths；
【基金】 Project supported by the China National Funds for Distinguished Young Scientists(61325024);Hi-tech Research and Development Program of China(National 863 Project:2014AA041902);National Nature Science Foundation of China(11174085,51132004,51302086);the Fund of Guangdong Province Cooperation of Producing,Studying and Researching(2012B091100140);Guangdong Natural Science Foundation(S2011030001349)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2016年10期
  • 【分类号】TQ171.718
  • 【被引频次】3
  • 【下载频次】39
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