| 摘要 |
A fibre-laser (600) incorporates an optical gain region (664b) which is substantially laminar, and substantially parallel to the fibre-laser's central longitudinal axis. The invention further provides a fibre-laser array, in which several such fibre-lasers are located along the length of a single optical fibre such that, their respective gain (664A, 664B) regions each lie in a different plane. Within a fibre-laser array of the invention, there is a reduced level of cross-talk between fibre-lasers compared to that in prior art fibre-laser arrays. In addition, the amount of pump radiation power absorbed by each laser in the array is substantially constant along the length of the optical fibre. |
