Title :
Thulium sensitised holmium-doped CW fluoride fibre laser of high efficiency
Author :
Davey, S.T. ; Swain, N.A. ; King, T.A.
Abstract :
CW operation of extremely high efficiency has been observed from the 2.024 mu m transition of holmium in a Tm:Ho codoped singlemode fluoride fibre laser. By pumping into thulium absorption between 820 and 830 nm, output powers of 250 mW and maximum slope efficiencies of 60% were observed. These results suggest that pump quantum, and photon conversion efficiencies of 150 and 75% respectively, are readily attainable.
Keywords :
fibre lasers; holmium; optical pumping; thulium; 2.024 micron; 250 mW; 60 percent; CW fluoride fibre laser; Tm, Ho:fluoride; high efficiency; maximum slope efficiencies; output powers; photon conversion efficiencies; pump quantum efficiency; pumping; single mode laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921433
