铕离子在SiO_2玻璃中的荧光变化  

FLUORESCENCE CHANGES OF Eu^(3+) IN SiO_2 GLASSES INDUCED BY FEMTOSECOND LASER PULSE

作　　者：张东丽[1] 于立新[1] 

机构地区：[1]吉林大学材料科学与工程学院,长春130026

出　　处：《硅酸盐学报》2009年第4期577-579,共3页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(10504030)项目资助。

摘　　要：采用溶胶-凝胶法合成了SiO2:Eu3+玻璃,以Eu3+作为荧光探针研究了飞秒激光辐照所诱导的荧光变化。结果表明:经飞秒激光辐照后,Eu3+的电荷迁移吸收的相对强度明显降低;辐照后的低温7F0-5D0激发峰发生蓝移,表明飞秒激光辐照诱导Eu3+周围的微观环境发生变化。低温荧光谱线窄化光谱进一步证明飞秒激光辐照诱导了Eu3+周围的微结构发生变化。Eu^3＋ doped SiO2 silicate glasses were prepared by sol-gel method, The fluorescence changes of Eu^3＋ induced by femto- second laser were investigated. The results indicate that the relative intensity of the charge transfer band decreases after ferntosecond laser irradiation. The ^7F0-^5D0 transition absorption blue-shifted in irradiated glass, indicates that the local environments surrounding the Eu^3＋ ions greatly change because of irradiation. Fluorescence narrow spectra further confirms this result,

关 键 词：硅酸盐玻璃 铕离子 飞秒激光 微观结构 荧光变化 

分 类 号：O482.31[理学—固体物理]