Influence of GeO2 Content on the Spectral and Radiation-Resistant Properties of Yb/Al/Ge Co-Doped Silica Fiber Core Glasses

被引:2
作者
Zhu, Yiming [1 ,2 ]
Jiao, Yan [2 ]
Cheng, Yue [1 ,2 ]
Shao, Chongyun [2 ]
Yu, Chunlei [2 ,3 ]
Dai, Ye [1 ]
Hu, Lili [2 ,3 ]
机构
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab High Power Laser Mat, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
基金
中国国家自然科学基金;
关键词
Yb-doped silica glass; radiation resistance; anti-darkening; color center; GAMMA-IRRADIATION; INDUCED DEFECTS; LASER; YTTERBIUM; SUPPRESSION; FABRICATION; ABSORPTION; CENTERS; SIO2;
D O I
10.3390/ma15062235
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, Yb/Al/Ge co-doped silica fiber core glasses with different GeO2 contents (0-6.03 mol%) were prepared using the sol-gel method combined with high-temperature sintering. The absorption, fluorescence, radiation-induced absorption, continuous-wave electron paramagnetic resonance spectra, and fluorescence decay curves were recorded and analyzed systematically before and after X-ray irradiation. The effects of GeO2 content on the valence variations of Yb3+/Yb2+ ions, spectral properties of Yb3+ ions, and radiation resistance of Yb/Al/Ge co-doped silica glasses were systematically studied. The results show that even if the GeO2 content of the sample is relatively low (0.62 mol%), it can inhibit the generation of Yb2+ ions with slight improvement in the spectral properties of Yb3+ ions in the pristine samples and effectively improve its radiation resistance. Direct evidence confirms that the generation of trapped-electron centers (Yb2+/Si-E'/Al-E') and trapped-hole centers (Al-OHC) was effectively inhibited by Ge co-doping. This study provides a theoretical reference for the development of high-performance, radiation-r esistant Yb-doped silica fibers.
引用
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页数:12
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