LASER array phase-locking and nonlinearity

F. Jeux, V. Kermene, A. Desfarges-Berthelemot, A. Barthelemy

XLIM Research Institute , France

The talk will discuss a situation where nonlinearity plays a key role in the behavior and in the dynamics of coupled lasers. Focusing on fiber lasers, Kerr nonlinearity and resonant contribution from the gain will be compared. In the context of coherently coupled fiber laser array, specific resonator and specific filtering can be implemented to compensate for path length differences in the laser array by nonlinear contribution. Theoretical results, as well as preliminary experimental results, will be reported showing improvement in the phase-locking of fiber laser array through resonant nonlinearity.