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We report on far field energy distribution control using a coherent beam combining femtosecond digital laser employing 61 tiled channels. Each channel is considered as an individual pixel where amplitude and phase are controlled independently. Applying a phase difference between neighboring fibers or neighboring fiber-lines gives high agility for a far field energy distribution and paves the way for deeper exploration of phase patterns as a tool to further improve the efficiency achievable with tiled-aperture/filled-aperture setups and far field shaping on demand.
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Claude-Alban Ranély-Vergé-Dépré, Matthieu Veinhard, Séverine Bellanger, Ihsan Fsaifes, Jean-Christophe Chanteloup, "Far field energy distribution control with a coherent beam combining femtosecond digital laser," Proc. SPIE PC11981, Fiber Lasers XIX: Technology and Systems, PC1198109 (4 March 2022); https://doi.org/10.1117/12.2614759