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Describes the efficient 2 mu m operation of a monomode Tm/sup 3+/-doped silica-based fibre laser pumped with a Nd:YAG laser at 1.06 mu m. The maximum fibre laser output power was 51 mW at 2.038 mu m for an absorbed pump power of 230 mW. The threshold power was 60 mW absorbed and the slope efficiency with respect to absorbed power was 30%.<<ETX>>
A 5 W CW single transverse mode neodymium-doped fibre laser operating in the 1.06 mu m region is reported. The silica-based double clad fibre laser routinely achieves 51% slope efficiency when pumped at 807 nm by a fibre-coupled multimode laser diode bar pump source.<<ETX>>
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