We report the performance and characteristics of a GaInNAs-based tunable fibre vertical-cavity surface-emitting laser
emitting at a wavelength of ~1200nm which may find application as a source in gasoline octane detection. The device,
which is pumped through the fibre by 810nm diodes, can emit more than 0.3mW of output power and is tunable over
17nm around 1197nm.
We report the first use of a Semiconductor Disk Laser (SDL) as a pump source for ~2μm-emitting Tm<sup>3+</sup> (,Ho<sup>3+</sup>)-doped
dielectric lasers. The ~1213nm GaInNAs/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<sup>3+</sup>-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<sup>3+</sup>-doped glass with a Tm<sup>3+</sup>-doped KYW
active medium. Emission of a Tm3+,Ho3+-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<sup>3+</sup>,Ho<sup>3+</sup>-codoped
silica fibre laser lead to 36mW output power with ~19.3% slope efficiency.