Cr^(3+)/Tm^(3+)/Ho^(3+)共掺氟磷酸盐玻璃的制备及性能表征  

Preparation and performance of Cr^(3+)/Tm^(3+)/Ho^(3+) co-doped fluorophosphate glasses

作　　者：吕景文[1] 刘双[1] 肖洪亮[1] 郑笑秋[1] 李岳[1] 李峰[1] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022

出　　处：《物理学报》2008年第10期6373-6380,共8页Acta Physica Sinica

摘　　要：制备了不同Al(PO3)3含量的掺铥系列氟磷酸盐玻璃,研究了其结构、热稳定性和光谱性质.研究了不同摩尔百分数Al(PO3)3掺杂下Cr3+/Tm3+/Ho3+共掺氟磷酸盐玻璃在2.0μm处的发光特性.并且用Judd-Ofelt理论计算了强度参量,并由此计算了激发能级的自发辐射跃迁速率、辐射寿命、荧光分支比等光谱参量.结果表明,随着Tm3+浓度增加,2.0μm处发光的强度逐渐增强.证明了Tm3+(3F4)→Ho3+(5I7)能量转移是非常有效的,并与掺杂浓度有关.Fluorophosphate glasses with various Al（PO3 ）3 contents were prepared, and their structure, thermal properties and spectral properties were studied. The emission properties at around 2.0μm of Cr^3＋/Tm^3＋/Ho^3＋ co-doped fluorophosphate glasses with different mole fractions of Tm^3＋ and Ho^3＋ were studied. The spectral strength parameters Ωt （t = 2,4,6） of those glasses have been calculated. Meanwhile, the spectral parameters, including the oscillator strength, spontaneous emission probability and branching ratios of Ho^3＋ , have been calculated. The results show that the 2.0μm emission intensity gradually grows higher with the increase of the mole fraction of Tm^3＋ . The Tm^3＋ → （^3F4 ） → Ho^3＋ （^5I7 ） energy transfer in （Tm^3＋/Ho^3＋ ） co-doped fluorophosphate glasses is very efficient, and it is dependent on the doping concentration.

关 键 词：氟磷酸盐玻璃 能量传递 荧光光谱 吸收光谱 

分 类 号：TN244[电子电信—物理电子学]