Title :
Power scaling of 2 /spl mu/m ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975 nm
Author :
Jeong, Youngmo ; Dupriez, P. ; Sahu, J.K. ; Nilsson, Johan ; Shen, D.Y. ; Clarkson, W.A. ; Jackson, Stuart D.
Author_Institution :
Optoelectronics Res. Centre, Southampton Univ., UK
Abstract :
An ytterbium-sensitised thulium-doped silica fibre laser that generates up to 75 W of output power in the 2 /spl mu/m wavelength range when cladding-pumped by a 975 nm diode stack is reported. The slope efficiency is 32% with respect to the launched pump power and the beam quality factor (M/sup 2/) is 1.3.
Keywords :
aluminium compounds; optical fibre cladding; optical pumping; semiconductor lasers; silicon compounds; thulium; ytterbium; 2 micron; 75 W; 975 nm; Al/sub 2/O/sub 3/-SiO/sub 3/:Tm,Yb; beam quality factor; cladding; power scaling; pumping; ytterbium sensitised thulium doped silica fibre laser diode;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20057534
