Title :
1.6 mu m semiconductor diode pumped thulium doped fluoride fibre laser and amplifier of very high efficiency
Author :
Perrin, S.D. ; Davey, S.T.
Abstract :
Results on a 1.6 mu m semiconductor diode pumped thulium fibre laser operating in the 1.9 mu m region are presented for the first time. A minimum threshold of 0.60mW and a maximum slope efficiency of 80% with respect to launched pump power have been observed. In addition gain values of 14.5dB have been achieved for 2.98mW of launched pump power indicating that a gain efficiency of 4.9dB/mW is possible.
Keywords :
fibre lasers; laser transitions; optical pumping; thulium; 0.60 mW; 1.6 micron; 1.9 micron; 14.5 dB; 2.98 mW; ZBLAN glass; ZBLAN:Tm; ZrF4-BaF2-LaF3-AlF3-NaF:Tm; amplifier; gain efficiency; gain values; launched pump power; maximum slope efficiency; minimum threshold; semiconductor diode pumped Tm doped fluoride fibre laser; very high efficiency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931411
