GaInNAs semiconductor disk lasers as pump sources Tm~(3+)(,Ho~(3+))- doped glass, crystal and fibre lasers

摘要

We report the first use of a Semiconductor Disk Laser (SDL) as a pump source for ～2μm-emitting Tm~(3+)(,Ho~(3+))-doped dielectric lasers. The ～1213nm GalnNAs/GaAs SDL produces >1W of CW output power, a maximum power transfer net slope efficiency of 18.5%, and a full width half maximum wavelength tuning range of ~24nm. Free-running operation of a Tm~(3+)-doped tellurite glass laser under 1213nm SDL pumping generated up to 60mW output power with 22.4% slope efficiency. Wavelength tunable output is also obtained from 1845 to 2043nm. Improved performance with output powers of ～200mW and a slope efficiency of -35% are achieved by replacing the Tm~(3+)-doped glass with a Tm~(3+)-doped KYW active medium. Emission of a Tm~(3+),Ho~(3+)-codoped tellurite glass laser is also reported with maximum output power of ～12mW and a ～7% slope efficiency. Finally, preliminary investigations of 1213nm-pumping of a Tm~(3+),Ho~(3+)-codoped silica fibre laser lead to 36mW output power with ～19.3% slope efficiency.