Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers

Optics Letters
J Le DortzA Brignon

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.

References

Mar 10, 2004·Optics Letters·Steven J AugstAntonio Sanchez
Jan 27, 2003·Optics Express·David SabourdyD Pureur
Jan 5, 2011·Optics Express·Enrico SeiseAndreas Tünnermann
Sep 22, 2011·Optics Express·Jérome BourderionnetArnaud Brignon
Nov 18, 2011·Optics Letters·Thomas WeyrauchJony Jiang Liu
Apr 4, 2015·Optics Express·Lourdes Patricia RamirezPatrick Georges
Jul 30, 2016·Optics Letters·Michael MüllerAndreas Tünnermann

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Citations

Jun 2, 2020·Optics Letters·Michael MüllerJens Limpert
Jul 19, 2020·Optics Express·Ihsan FsaifesJean-Christophe Chanteloup
Dec 15, 2018·Optics Letters·Michael MüllerJens Limpert
Dec 17, 2020·Optics Letters·Maike ProssotowiczUwe Morgner

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