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 in 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.
Boullet
Johan
J
Institut de Recherches en Communications Optiques et Microondes, 123 Avenue Albert Thomas, 87060 Limoges, France. boullet@ircom.unilim.fr
Sabourdy
David
D
Desfarges-Berthelemot
Agnès
A
Kermène
Vincent
V
Pagnoux
Dominique
D
Roy
Philippe
P
Dussardier
Bernard
B
Blanc
Wilfried
W