A single-mode laser is demonstrated using a newly developed double-clad thulium-ytterbium-doped fiber （TYDF） in a linear cavity formed by two fiber Bragg gratings （FBGs）. The YTF used is drawn from a D-shape prefo...A single-mode laser is demonstrated using a newly developed double-clad thulium-ytterbium-doped fiber （TYDF） in a linear cavity formed by two fiber Bragg gratings （FBGs）. The YTF used is drawn from a D-shape preform fabricated using the modified chemical vapor deposition and solution doping technique. The laser is operated at 1 901.6 nm via the transition of thulium ions from 3F4 to 3H6 with the assistance of ytterbium to thulium ion energy transfer. The efficiencies of the laser are 0.71% and 0.75% at 927- and 905-nm multimode pumping, respectively. The thresholds of the launched pump power for 927- and 905-nm pumping are 1 314 and 1 458 mW, respectively. A 7-mW output is obtained at a 905-nm pump power of 2 400 mW.展开更多
基金the Department of Science and Technology of the government of India for their financial assistanceS. W. Harun would like to thank the University of Malaya for the financial support provided under the HIR Grant No.D000009-16001
文摘A single-mode laser is demonstrated using a newly developed double-clad thulium-ytterbium-doped fiber （TYDF） in a linear cavity formed by two fiber Bragg gratings （FBGs）. The YTF used is drawn from a D-shape preform fabricated using the modified chemical vapor deposition and solution doping technique. The laser is operated at 1 901.6 nm via the transition of thulium ions from 3F4 to 3H6 with the assistance of ytterbium to thulium ion energy transfer. The efficiencies of the laser are 0.71% and 0.75% at 927- and 905-nm multimode pumping, respectively. The thresholds of the launched pump power for 927- and 905-nm pumping are 1 314 and 1 458 mW, respectively. A 7-mW output is obtained at a 905-nm pump power of 2 400 mW.
