Highly Scalable Coherent Beam Combining of Femtosecond Fiber Chirped-Pulse Amplifiers

Anke Heilmann, Jérémy Le Dortz,Louis Daniault,Ihsan Fsaifes,Severine Bellanger,Jérôme Bourderionnet,Christian Larat,Eric Lallier,Marie Antier,Eric Durand,Christophe Simon-Boisson,Arnaud Brignon,Jean-Christophe Chanteloup

Laser Congress 2018 (ASSL) (2018), paper AM2A.8（2018）

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摘要

We report on the coherent beam combining of seven fiber chirped-pulse amplifiers using a highly scalable architecture. A combining efficiency of 48% is obtained in linear regime, yielding 71 W pump-limited average power after compression, with a phase noise between two fibers as low as λ/38 RMS. The experiment is operated at high B-integral, with only little impact on the combining efficiency as well as on the temporal and spatial properties of the combined beam.

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