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Abstract:
采用Czochralski法生长出光学质量的BaWO4:Tm3+单晶,利用X粉末衍射实验确定了不同掺杂浓度晶体的晶胞参数.测定了晶体的室温吸收光谱,应用Juud-Ofelt理论,拟合了光谱的3个强度参数,其值分别为Ω2=4.04×10-20cm2,Ω4=0.509×10-20cm2,Ω6=0.134×10-20cm2,计算了光学参数,如各个能级跃迁的谱线强度、振子强度、吸收截面,得到荧光寿命、荧光分支比和受激发射截面.测定了紫外可见荧光谱,分析了可能的发光机理.在钛宝石激光和LD激光激发时,室温下观察到BaWO4:Tm3+晶体的红色上转换发光,相应于3F3到3H6的能级跃迁.
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Source :
物理学报
Year: 2010
Issue: 01
Volume: 59
Page: 609-615
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 13
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