Yb3+-Doped Double-Clad Fiber Laser Pumped by Rectangular Inner Cladding
NING Ding1,2, LI Yi-Gang3, HUANG Bang-Cai3, SUN Jian-Jun2, LÜ Ke-Cheng3,YUAN Shu-Zhong1, DONG Xiao-Yi1
1Institute of Modern Optics, Nankai University, Tianjin 300071
2Electronic 46th Institute, Ministry of Information Industry, Tianjin 300220
3College of Physics Science, Nankai University, Tianjin 300071
Yb3+-Doped Double-Clad Fiber Laser Pumped by Rectangular Inner Cladding
NING Ding1,2;LI Yi-Gang3;HUANG Bang-Cai3;SUN Jian-Jun2;LÜ Ke-Cheng3,YUAN Shu-Zhong1;DONG Xiao-Yi1
1Institute of Modern Optics, Nankai University, Tianjin 300071
2Electronic 46th Institute, Ministry of Information Industry, Tianjin 300220
3College of Physics Science, Nankai University, Tianjin 300071
Abstract： A novel Yb3+-doped double-clad silica fiber with rectangular inner cladding was designed and developed by using the modified chemical vapour deposition process, solution-doping and optical machining altogether. The dimension of inner cladding is 100 x 70μm, and Yb3+-doped concentration in the core is about 0.24wt.%. The operation of the fiber laser pumped by inner cladding is reported. The threshold of the laser is 34mW. When the pump power launched is 141mW, the laser output is 84mW at the wavelength 1075.6nm, and the slope efficiency is 77%.
2001, Vol. 18 
