J.Y. Allain, M. Monerie, H. Poignant
Abstract
Laser oscillation at 2.04 μm has been observed in a thulium-sensitised holmium doped singlemode fluorozirconate fibre. 52% slope efficiency and 250 mW output power were obtained with a pump at 0.82 μm. Crossrelaxation in thulium gives a pump quantum efficiency of 1.30.
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Laser oscillation at 2.04 μm has been observed in a thulium-sensitised holmium doped singlemode fluorozirconate fibre. 52% slope efficiency and 250 mW output power were obtained with a pump at 0.82 μm. Crossrelaxation in thulium gives a pump quantum efficiency of 1.30.
Key concepts: Thulium, Holmium, Slope efficiency, Materials science, Doping, Laser, Fiber laser, Optics