Coherent combining in an Yb doped double core fiber laser
  Coherent combining is demonstrated in a clad pumped Yb doped double core fiber laser. A slope efficiency of more than 70 % is achieved with 96 % of the total output power on the fundamental mode of one of the two cores. This high combining efficiency is obtained when both cores are coupled via a biconical fused taper in a Michelson interferometer configuration. 
Johan Boullet (IRCOM), David Sabourdy (IRCOM), Agn\`es   Desfarges-Berthelemot (IRCOM), Vincent Kerm\`ene (IRCOM), Dominique...
physics.optics