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Rectangular double-clad fibre laser with two-end-bundled pump

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4 Author(s)
Liu, A. ; Inst. for Laser Sci., Univ. of Electro-Commun., Tokyo ; Song, J. ; Kamatani, K. ; Ueda, K.

The two ends of an Nd-doped rectangular double-clad fibre are bundled together to achieve efficient matching with a 10 W fibre coupled LD. With such a configuration, ~5.4 W pump light is launched into the first-cladding, and 2.5 W laser output is obtained. A slope efficiency of 51% with respect to launched pump power has been achieved

Published in:

Electronics Letters  (Volume:32 ,  Issue: 18 )