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

Abstract : 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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https://hal-iogs.archives-ouvertes.fr/hal-00700652
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Submitted on : Wednesday, May 23, 2012 - 3:56:48 PM
Last modification on : Tuesday, April 5, 2022 - 3:45:14 AM
Long-term archiving on: : Thursday, December 15, 2016 - 8:29:36 AM

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  • HAL Id : hal-00700652, version 1

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Laurent Lombard, Arnaud Brignon, Jean-Pierre Huignard, Eric Lallier, Patrick Georges. Beam cleanup in a self-aligned gradient index Brillouin cavity for high power multimode fiber amplifiers. Optics Letters, Optical Society of America - OSA Publishing, 2006, 31 (2), pp.158-160. ⟨hal-00700652⟩

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