L. Lombard, C. Delezoide, G. Canat, V. Jolivet, P. Bourdon
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Laser beam combining by beam cleanup in a gradient index Brillouin ring cavity
We propose and investigate a new beam combining setup using stimulated-Brillouin-scattering in a multimode gradient-index-fiber within a ring cavity. 50% efficiency and 99% slope are achieved with 2 ErYb doped fiber amplifiers without external control.