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Updated: Jun 13, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Coherent combining of 49 laser beams from a multiple core optical fiber by a spatial light modulator
J Lhermite1, E Suran, V Kermene
1Faculté des Sciences 123, avenue A. Thomas, Université de Limoges, Centre National de la Recherche Scientifique, XLIM Institut de Recherche, 87060 Limoges, France.
Abstract:
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.
