摘要
Yb3＋ doped fluorophosphate （FP/Yb） glasses with emission cross section and fluorescence lifetime as high as 0.8388×10-20 cm 2 and 2.3 ms were developed,and AlF3 content is proved to decrease the lifetime obviously.Large scale glass casting procedure shows high Tx-Tg doesn t make better casting crystallization stability in certainty.Although Yb laser is difficult to be obtained in FP glass,a 230 mw laser was still achieved from 2 mm thick samples under 976 nm LD excitation because of the large gain parameter（σemiτf） of the FP/Yb glass.Lasing test also proved the relationship between laser output and gain parameter.Combined with its wide and flat effective gain property,this FP/Yb glass is a practical new potential material for low power ultra-short pulse application.
Yb3＋ doped fluorophosphate （FP/Yb） glasses with emission cross section and fluorescence lifetime as high as 0.8388×10-20 cm 2 and 2.3 ms were developed,and AlF3 content is proved to decrease the lifetime obviously.Large scale glass casting procedure shows high Tx-Tg doesn t make better casting crystallization stability in certainty.Although Yb laser is difficult to be obtained in FP glass,a 230 mw laser was still achieved from 2 mm thick samples under 976 nm LD excitation because of the large gain parameter（σemiτf） of the FP/Yb glass.Lasing test also proved the relationship between laser output and gain parameter.Combined with its wide and flat effective gain property,this FP/Yb glass is a practical new potential material for low power ultra-short pulse application.
基金
supported by the National Natural Science Foundation of China(NSFC) under grant No.50502030
