Energy transfer mechanism in Er3+ doped fluoride glass sensitized by Tm3+ or no3+ for 2.7-μm emission |
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作者姓名: | 黄飞飞, 刘雪强, 李韦韦, 胡丽丽, 陈丹平 |
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作者单位: | [1]Key Laboratory of A,faterials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; [2]University of Chinese Academy of Sciences, Beijing 100049, China |
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基金项目: | This work was financially supported by the National Natural Science Foundation of China under Gramt No. 51172252. |
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摘 要: | Enhanced 2.7 μm emission is obtained in Er3+/Tma+ and Era+/Ho3+ codoped ZBYA glasses. Absorp- tion and emission spectra are tested to characterize the 2.7 μm emission properties of Era+/Tm3+ and Era+/Ho3+ doped ZBYA glasses and a reasonable energy transfer mechanism of 2.7 μm emission between Er3+ and Tm3+Ho3+) ion is proposed. Codoping of Tm3+ or Ho3+ significantly reduces the lifetime of the Era+: 4I13/2 level due to the energy transfer of Er3+:4I13/2 →Tm3+:3F4 or Er3+:4I13/2 →Ho3+: 5I7. Thus, the 2.7μm emission is strengthened and the 1,5μm emission is decreased accordingly especially in the Era+/Tma+ sample. The upconversion effects between the Er3+/Tm3+ and Er3+/Ho3+ doped ZBYA glasses are different attribute to the different energy transfer efficiencies. Both of the two codoped samples possess nearly equal large emission cross section (16.6 × 10 -21 cm-2) around 2.7 μm. The results indicate that this Er3+/Tm3+ or Er3+/Ho3+ doped ZBYA glass has potential applications in 2.7 μm laser.
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关 键 词: | 能量转移效率 能量传递机制 氟化物玻璃 发射光谱 共掺杂 铒 铥 发射性能 |
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