中国物理B ›› 1998, Vol. 7 ›› Issue (10): 773-783.doi: 10.1088/1004-423X/7/10/009
陈学元1, 罗遵度2
Chen Xue-yuan (陈学元)a, Luo Zun-du (罗遵度)ab
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.
中图分类号: (Other solid inorganic materials)