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Le Dortz J, Heilmann A, Antier M, et al. Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers. Opt Lett. 2017;42(10):1887-1890doi: 10.1364/OL.42.001887.
Le Dortz, J., Heilmann, A., Antier, M., Bourderionnet, J., Larat, C., Fsaifes, I., Daniault, L., Bellanger, S., Simon Boisson, C., Chanteloup, J. C., Lallier, E., & Brignon, A. (2017). Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers. Optics letters, 42(10), 1887-1890. https://doi.org/10.1364/OL.42.001887
Le Dortz, J, et al. "Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers." Optics letters vol. 42,10 (2017): 1887-1890. doi: https://doi.org/10.1364/OL.42.001887
Le Dortz J, Heilmann A, Antier M, Bourderionnet J, Larat C, Fsaifes I, Daniault L, Bellanger S, Simon Boisson C, Chanteloup JC, Lallier E, Brignon A. Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers. Opt Lett. 2017 May 15;42(10):1887-1890. doi: 10.1364/OL.42.001887. PMID: 28504751.
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Opt Lett. 2017 May 15;42(10):1887-1890. doi: 10.1364/OL.42.001887.

Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers.

Optics letters

J Le Dortz, A Heilmann, M Antier, J Bourderionnet, C Larat, I Fsaifes, L Daniault, S Bellanger, C Simon Boisson, J-C Chanteloup, E Lallier, A Brignon

PMID: 28504751 DOI: 10.1364/OL.42.001887

Abstract

Coherent beam combining in the femtosecond regime of a record number of 19 fibers is demonstrated. The interferometric phase measurement technique, particularly well suited to phase-lock a very large number of fibers, is successfully demonstrated in the femtosecond regime. A servo loop is implemented to control piezoelectric fiber stretchers for both phase and delay variation compensation. The residual phase errors are below λ/60  rms. Nearly 50% of the total energy is contained in the far-field central lobe. After compression, we obtain a combined pulse width of 300 fs identical to the master oscillator pulse width.

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