Coherent combining of 49 laser beams from a multiple core optical fiber by a spatial light modulator.
We report co-phasing of 49 beams from a multicore fiber based on a spatial light modulator using a simple feedback loop control. A specific fiber of 7x7 Germanium doped cores was fabricated. The power carried by the far field main lobe of the phased array, in the continuous wave regime, amounts to 96% of its theoretical value. Femtoseconde pulses were also phase-locked with the same device configuration.
Lhermite
J
J
Faculté des Sciences 123, avenue A. Thomas, Université de Limoges, Centre National de la Recherche Scientifique, XLIM Institut de Recherche, 87060 Limoges, France.
Suran
E
E
Kermene
V
V
Louradour
F
F
Desfarges-Berthelemot
A
A
Barthélémy
A
A