UV Laser Induced Transmission Change of Pure and Doped Silica Glass  

作　　者：谢峻林 邓涛 

机构地区：[1]School of Materials Science and Engineering,Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2008年第6期879-882,共4页武汉理工大学学报（材料科学英文版）

摘　　要：Pure and F,GeO2-doped silica glass cut from fiber preforms prepared by plasma assisted chemical vapor deposition（PCVD） were investigated by ultraviolet absorption spectroscopy.The ultraviolet absorption characteristics of these glasses were also studied after UV laser irradiation and heating treatment.It was found that absorption band near 240 nm assigned to GODC was found both in GeO2-doped and F-GeO2 co-doped silica glass,but absorption intensity of the latter was lower than that of the former.It＇s because F can react with GODC and GeE′ simultaneously and reduce their concentration.After irradiation,UV absorption change of F-GeO2 co-doped silica glass was weaker than that of GeO2-doped silica glass,it thus can be concluded that introduction of F could depress the UV absorption of GeO2-doped silica core effectively.Pure and F,GeO2-doped silica glass cut from fiber preforms prepared by plasma assisted chemical vapor deposition（PCVD） were investigated by ultraviolet absorption spectroscopy.The ultraviolet absorption characteristics of these glasses were also studied after UV laser irradiation and heating treatment.It was found that absorption band near 240 nm assigned to GODC was found both in GeO2-doped and F-GeO2 co-doped silica glass,but absorption intensity of the latter was lower than that of the former.It＇s because F can react with GODC and GeE′ simultaneously and reduce their concentration.After irradiation,UV absorption change of F-GeO2 co-doped silica glass was weaker than that of GeO2-doped silica glass,it thus can be concluded that introduction of F could depress the UV absorption of GeO2-doped silica core effectively.

关 键 词：IRRADIATION color center absorption spectrum 

分 类 号：TQ171.1[化学工程—玻璃工业]