Recent progress in the development of Tm3+-doped silica fibre lasers

In this paper, measurements of the slope efficiency and the pump power at threshold for a range of Tm³⁺ concentrations, which are doped into the fibre using the solution doping technique are presented. The temporal characteristics of a standing wave Tm³⁺-doped silica fibre laser are also presented. The results from characterisation experiments relating to the high power operation of a Tm³⁺-doped silica fibre laser that has the Tm³⁺ dopant incorporated into the fibre using the chelate 2,2,6,6-tetramethyl-3,5-heptanedione are presented.