250 W single-crystal fiber Yb:YAG laser

Xavier Délen (1) , Stefan Piehler (2) , Julien Didierjean (3) , Nicolas Aubry (3) , Andreas Voss (2) , Marwan Abdou Ahmed (2) , Thomas Graf (2) , François Balembois (1) , Patrick Georges (1)

1 Laboratoire Charles Fabry / Lasers
2 IFSW - Institut für Strahwerkzeuge
3 Fibercryst

We demonstrate an Yb:YAG single-crystal fiber laser with 251 W output power in continuous-wave and an optical efficiency of 44%. This performance can be explained by the high overlap between pump and signal beams brought by the pump guiding and by the good thermal management provided by the single-crystal fiber geometry. The oscillator performance with a reflectivity of the output coupler as low as 20% also shows high potential for power amplification.

Domains: Optics [physics.optics]

Xavier Délen, Stefan Piehler, Julien Didierjean, Nicolas Aubry, Andreas Voss, et al.. 250 W single-crystal fiber Yb:YAG laser. Optics Letters, 2012, 37 (14), pp.2898-2900. ⟨10.1364/OL.37.002898⟩. ⟨hal-00854443⟩