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

Anke Heilmann (1) , Jérémy Le Dortz , Louis Daniault (1) , Ihsan Fsaifes (1) , Séverine Bellanger (1) , Jérôme Bourderionnet (2) , Christian Larat (2) , Eric Lallier (3) , Marie Antier (4) , Eric Durand (4) , Christophe Simon-Boisson (4) , Arnaud Brignon (3) , Jean-Christophe Chanteloup (1)

1 LULI - Laboratoire pour l'utilisation des lasers intenses
2 TRT - Thales Research and Technologies [Orsay]
3 Thales Research and Technology [Palaiseau]
4 Thales LAS France

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.

Mots clés: OCIS codes: (1403298) Laser beam combining; (1403510) Lasers; fiber; (1407090) Ultrafast lasers

Domaines: Optique [physics.optics]

Anke Heilmann, Jérémy Le Dortz, Louis Daniault, Ihsan Fsaifes, Séverine Bellanger, et al.. Highly Scalable Coherent Beam Combining of Femtosecond Fiber Chirped-Pulse Amplifiers. The Advanced Solid State Lasers Conference SSL, Nov 2018, boston, United States. ⟨hal-02368363⟩