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Tm(0.1)Yb(5):FOV纳米相氟氧化物玻璃陶瓷的紫外和可见上转换发光 被引量:1

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摘要 研究了在975nm半导体激光激发下纳米相氟氧化物玻璃陶瓷Tm(0.1)Yb(5):FOV里Yb3+敏化Tm3+的紫外和可见上转换发光.发现了位于363.6nm的一条紫外上转换发光线,它是Tm3+离子的1D2→3H6的荧光跃迁.还发现了位于450.7nm,(477.0,462.5nm),648.5nm,(680.5,699.5nm)和(777.2,800.7nm)的几条上转换发光线,它们是Tm3+离子的1D2→3F4,1G4→3H6,1G4→3F4,3F3→3H6和3H4→3H6的荧光跃迁.通过对上转换发光强度F随975nm抽运激光功率P改变详细地测量和分析证实了1D2能级的上转换发光部分是五光子上转换发光,而1G4能级和3H4能级的上转换发光则是三光子和双光子上转换发光.初步的理论分析建议1D2能级的上转换发光机理部分是Tm3+离子之间{3H4(Tm3+)→3F4(Tm3+),1G4(Tm3+)→1D2(Tm3+)}和{1G4(Tm3+)→3F4(Tm3+),3H4(Tm3+)→1D2(Tm3+)}的交叉能量传递.而1G4能级和3H4能级的上转换发光机理则是Yb3+离子到Tm3+离子的{2F5/2(Yb3+)→2F7/2(Yb3+),3H4(Tm3+)→1G4(Tm3+)}和{2F5/2(Yb3+)→2F7/2(Yb3+),3F4(Tm3+)→3F2(Tm3+)}的相继的能量传递。
出处 《中国科学(G辑)》 CSCD 2008年第7期817-824,共8页
基金 国家自然科学基金资助项目(批准号:10674019)
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