Title :
Efficient upconversion pumping at 1.064 mu m Tm3+-doped fluoride fibre laser operating around 1.47 mu m
Author :
Komukai, Tetsuro ; Yamamoto, Takayuki ; Sugawa, Tomoki ; Miyajima, Y.
Author_Institution :
NTT Opt. Cable Syst. Lab., Ibaraki, Japan
fDate :
4/23/1992 12:00:00 AM
Abstract :
1.064 mu m upconversion pumping was used to operate a highly efficient CW and Q-switched thulium (Tm3+)-doped fluoride fibre laser at around 1.47 mu m. The maximum CW output power was 100 mW for a launched pump power of 570 mW. The threshold power was 200 mW, the slope efficiency 27% and the wavelength width 20 nm. A peak power of 70 W was generated for Q-switching at a launched pump power of 300 mW.
Keywords :
Q-switching; fibre lasers; optical frequency conversion; optical pumping; thulium; 1.064 micron; 1.47 micron; 100 mW; 200 mW; 27 percent; 300 mW; 570 mW; 70 W; CW output power; Q-switching; Tm 3+-doped fluoride fibre laser; ZBLAN:Tm 3+; ZrF4-BaF2-LaF3-AlF3-NaF:Tm; launched pump power; peak power; slope efficiency; threshold power; upconversion pumping; wavelength width;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920525
