The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content

doi:10.1016/j.jnoncrysol.2025.123478

IMR OpenIR

	The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content
	Chen, Yichong 1,2; Li, Xin 1,2; Wang, Yafei 1; Zhao, Mingjun 1,2; Shao, Chongyun 1,4; Yu, Chunlei 1,3; Hu, Lili 1,3
通讯作者	Shao, Chongyun(shaochongyun@siom.ac.cn) ; Yu, Chunlei(sdycllcy@siom.ac.cn)
	2025-05-15
发表期刊	JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN	0022-3093
卷号	656 页码:8
摘要	Hydrogen (H2) loading has been widely used to enhance the photosensitivity of germanium-doped fibers (GDF). However, the photosensitivity enhancement mechanism via H2-loading remains unclear. In this work, GDF was prepared using modified chemical vapor deposition (MCVD) method. H2-loading treatment is carried out on Gedoped silica glass and fiber using high-pressure autoclave. A 248 nm KrF excimer laser was used to expose Gedoped silica glass and fiber with or without H2 loading. The influence of H2 content on the photosensitivity of GDF was studied during the FBG inscription process, and the influence mechanism was revealed from the atomic level microscale. The evolution of H2 content-dependent color centers caused by 248 nm laser irradiation and their characteristics in GDF core glasses was identified through photoluminescence (PL), radiation induced absorption (RIA), electron paramagnetic resonance (EPR) and other methods. The results showed that the Ge-ODCs content in the Ge-doped silica with H2-loading decreased significantly after 248 nm laser irradiation, producing much more Ge(1), Ge-E ', H(II) color centers than the glass without H2, but no Ge(2) was generated. The generation of Ge-E' was significantly enhanced in the presence of H(II). This work visually demonstrated the effect of H2 loading on the enhancement of photosensitivity and further revealed H2 significantly accelerated the rate of color center conversion.
关键词	Photosensitivity Germanium-doped fibers H 2 content Color centers H(II)
资助者	Strategic Priority Research Program of the Chinese Academy of Sciences ; Ling Chuang Research Project of China National Nuclear Corporation ; Shanghai Science and Technology Innovation Action Plan
DOI	10.1016/j.jnoncrysol.2025.123478
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0650000] ; Ling Chuang Research Project of China National Nuclear Corporation[CNNC-LCKY-202281] ; Shanghai Science and Technology Innovation Action Plan[23ZR1471900]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics ; Materials Science, Multidisciplinary
WOS记录号	WOS:001445346500001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191955
专题	中国科学院金属研究所
通讯作者	Shao, Chongyun; Yu, Chunlei
作者单位	1.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Special Glasses & Fibers Res Ctr, Adv Laser & Optoelect Funct Mat Dept, Shanghai 201800, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 3.UCAS, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yichong,Li, Xin,Wang, Yafei,et al. The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2025,656:8.
APA	Chen, Yichong.,Li, Xin.,Wang, Yafei.,Zhao, Mingjun.,Shao, Chongyun.,...&Hu, Lili.(2025).The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content.JOURNAL OF NON-CRYSTALLINE SOLIDS,656,8.
MLA	Chen, Yichong,et al."The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content".JOURNAL OF NON-CRYSTALLINE SOLIDS 656(2025):8.