Experimental study of cophasing dynamics in passive coherent combining of fiber lasers

We have used a two-channel fiber laser array for the study of cophasing dynamics in a passively locked laser array for coherent combining. Starting from an in-phase laser emission, the array was unbalanced by a short phase perturbation introduced on one arm. The dynamics for recovery of phase lockin...

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Bibliographic Details
Published in:Optics letters 2011-08, Vol.36 (15), p.2907-2909
Main Authors: GUILLOT, J, DESFARGES-BERTHELEMOT, A, KERMENE, V, BARTHELEMY, A
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
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Summary:We have used a two-channel fiber laser array for the study of cophasing dynamics in a passively locked laser array for coherent combining. Starting from an in-phase laser emission, the array was unbalanced by a short phase perturbation introduced on one arm. The dynamics for recovery of phase locking and recovery of initial power of the laser array have been characterized. Cophasing was found to be quickly restored, in a few cavity rounds, before the gain dynamics brought back the steady-state power.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.36.002907