Suppression mechanism of radiation-induced darkening by Ce doping in Al/Yb/Ce-doped silica glasses: Evidence from optical spectroscopy, EPR and XPS analyses

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光单元技术研发中心

	Suppression mechanism of radiation-induced darkening by Ce doping in Al/Yb/Ce-doped silica glasses: Evidence from optical spectroscopy, EPR and XPS analyses
	Wang, Shikai; Hu, Lili; Yu, Chunlei; Shao, Chongyun; Xu, Wenbin; Ollier, Nadege; Guzik, Malgorzata; Boulon, Georges; Yu, Lu; Zhang, Lei
刊名	J. Appl. Phys.
	2016
卷号	120 期号:15
通讯作者	woshiwsk@163.com ; hulili@siom.ac.cn
英文摘要	Yb3+/Al3+ co-doped silica glasses with different Ce2O3 contents were prepared using the sol-gel method combined with high-temperature sintering. Changes in refractive index, absorption, emission and fluorescence lifetime of these glasses caused by X-ray irradiation were recorded and analyzed systematically. It is found that co-doping with certain amount of Ce could greatly improve the radiation resistance without evident negative effects on the basic optical properties of the Yb3+ ions in the near-infrared region. The nature of the radiation-induced color centres and the mechanism by which Ce prevented the formation of these centres were studied using optical absorption, electron paramagnetic resonance (EPR), and X-ray photoelectron spectroscopy (XPS) methods. Direct evidence confirmed that trapped electron centres (Yb2+/Si-E'/Al-E') and trapped hole centres (Al-OHCs) were effectively inhibited by Ce doping, which was correlated to the coexistence of the redox couple Ce3+/Ce4+ in the glasses. These results are helpful to understand the micro-structural origin and the suppression mechanism by Ce co-doping of the photodarkening effect in Yb3+-doped silica fibers. Published by AIP Publishing.
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) [61505232, 61405215]
WOS记录号	WOS:000386934000001
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/28331]
专题	上海光学精密机械研究所_高功率激光单元技术研发中心
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Wang, Shikai,Hu, Lili,Yu, Chunlei,et al. Suppression mechanism of radiation-induced darkening by Ce doping in Al/Yb/Ce-doped silica glasses: Evidence from optical spectroscopy, EPR and XPS analyses[J]. J. Appl. Phys.,2016,120(15).
APA	Wang, Shikai.,Hu, Lili.,Yu, Chunlei.,Shao, Chongyun.,Xu, Wenbin.,...&Zhang, Lei.(2016).Suppression mechanism of radiation-induced darkening by Ce doping in Al/Yb/Ce-doped silica glasses: Evidence from optical spectroscopy, EPR and XPS analyses.J. Appl. Phys.,120(15).
MLA	Wang, Shikai,et al."Suppression mechanism of radiation-induced darkening by Ce doping in Al/Yb/Ce-doped silica glasses: Evidence from optical spectroscopy, EPR and XPS analyses".J. Appl. Phys. 120.15(2016).