摘要We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791nm at room temperature. The slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8W and 4.8W, respectively. The beam qualities Mx2 and My2 are 1.26 and 1.32, respectively. The experimental results are also analysed.
Abstract：We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791nm at room temperature. The slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8W and 4.8W, respectively. The beam qualities Mx2 and My2 are 1.26 and 1.32, respectively. The experimental results are also analysed.
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2008, Vol. 25 
