First multi-watt ribbon fiber oscillator in a high order mode.

  title={First multi-watt ribbon fiber oscillator in a high order mode.},
  author={Derrek R. Drachenberg and Mike J. Messerly and Paul H. Pax and Arun Sridharan and John B. Tassano and Jay W. Dawson},
  journal={Optics express},
  volume={21 15},
Optical fibers in the ribbon geometry have the potential to reach powers well above the maximum anticipated power of a circular core fiber. In this paper we report the first doped silica high order mode ribbon fiber oscillator, with multimode power above 40 W with 71% slope efficiency and power in a single high order mode above 5 W with 44% slope efficiency. 


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