中国物理B ›› 1998, Vol. 7 ›› Issue (10): 773-783.doi: 10.1088/1004-423X/7/10/009

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UPCONVERSION FLUORESCENCE DYNAMICS OF Tm3+ IONS IN LiYF4 CRYSTAL

陈学元1, 罗遵度2   

  1. (1)Fujian Institute of Research on the Structure of Matter, Academia Sinica, Fuzhou 350002, China; (2)Fujian Institute of Research on the Structure of Matter, Academia Sinica, Fuzhou 350002, China; China Centre of Advance Science and Technology (CCAST) (World Laboratory), P. O. Box 8730, Beijing 100080, China
  • 收稿日期:1998-02-25 修回日期:1998-04-07 出版日期:1998-10-20 发布日期:1998-10-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Fujian Province, China.

UPCONVERSION FLUORESCENCE DYNAMICS OF Tm3+ IONS IN LiYF4 CRYSTAL

Chen Xue-yuan (陈学元)a, Luo Zun-du (罗遵度)ab   

  1. a Fujian Institute of Research on the Structure of Matter, Academia Sinica, Fuzhou 350002, China; b China Centre of Advance Science and Technology (CCAST) (World Laboratory), P. O. Box 8730, Beijing 100080, China
  • Received:1998-02-25 Revised:1998-04-07 Online:1998-10-20 Published:1998-10-20
  • Supported by:
    Project supported by the Natural Science Foundation of Fujian Province, China.

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摘要： According to Judd-Ofelt parameter calculation and energy transfer theory, the cross-relaxation process of the Tm3+ ions is investigated. A four-level system of coupled rate equations is established to study the fluorescence dynamics of Tm3+ in LiYF4 crystal. Attentions are focused on the upconversion luminescence 1G4→3H6 (483.0 nm) in Tm3+:LiYF4. The relationship between the avalanche properties (critical pump rate, fluorescence intensity and buildup time) originated by resonant excited state absorption and the doped Tm3+ concentration is discussed, and some useful conclusions are drawn.

Abstract: According to Judd-Ofelt parameter calculation and energy transfer theory, the cross-relaxation process of the Tm3+ ions is investigated. A four-level system of coupled rate equations is established to study the fluorescence dynamics of Tm3+ in LiYF4 crystal. Attentions are focused on the upconversion luminescence 1G4→3H6 (483.0 nm) in Tm3+:LiYF4. The relationship between the avalanche properties (critical pump rate, fluorescence intensity and buildup time) originated by resonant excited state absorption and the doped Tm3+ concentration is discussed, and some useful conclusions are drawn.

中图分类号:  (Other solid inorganic materials)

  • 78.55.Hx
61.72.up (Other materials) 61.72.S- (Impurities in crystals)