کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5428433 | 1508674 | 2014 | 5 صفحه PDF | دانلود رایگان |
- Broadband near-infrared emission from Yb/Bi co-doped borophosphate glasses and fibers was investigated.
- The mechanism of Bi ions luminescence was discussed.
- The infrared emissions pumped by 808Â nm and 976Â nm LDs were ascribed to Bi+ and Bi2+, respectively.
Yb/Bi co-doped borophosphate glasses and fibers were prepared. The effect of Yb3+ on the near-infrared (NIR) luminescent properties and the mechanism of luminescence of Bi-ions were investigated. Under 976Â nm laser diode (LD) excitation, the NIR emission intensity of the glass with 8Â mol% Yb2O3 co-doped glass is ~37 times stronger than that of Bi singly-doped glass. The fluorescence lifetime increases by ~7 times with 5Â mol% Yb2O3 co-doped glass. The energy transfer efficiency is ~59.1%. It is also suggested that the broadband NIR luminescence pumped by 808Â nm and 976Â nm LDs derives from Bi+ and Bi2+, respectively.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 141, July 2014, Pages 9-13