Beam cleanup in a self-aligned gradient-index Brillouin cavity for high-power multimode fiber amplifiers | Zendy

Laurent Lombard | Zendy; A. Brig | Zendy; J.-P. Huignard | Zendy; É. Lallier | Zendy; Patrick Georges | Zendy

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Beam cleanup in a self-aligned gradient-index Brillouin cavity for high-power multimode fiber amplifiers

Author(s) -

Laurent Lombard,

A. Brig,

J.-P. Huignard,

É. Lallier,

Patrick Georges

Publication year - 2006

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.31.000158

Subject(s) - multi mode optical fiber , optics , materials science , beam (structure) , brillouin zone , brillouin scattering , phase conjugation , laser beam quality , amplifier , optical fiber , optoelectronics , physics , laser beams , laser , cmos

We propose a beam cleanup setup to convert a multimode beam into a single-mode beam by use of the Brillouin effect in a multimode gradient-index (GI) fiber. Phase conjugation and beam cleanup regimes in highly multimode fibers are discussed, and the self-aligned GI fiber Brillouin cavity is presented. We report a preliminary conversion from an M2=6.5 beam into an M2=1.3 beam with 31% efficiency.

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