Kerr self-cleaning of pulsed beam in an ytterbium doped multimode fiber

We experimentally demonstrate that Kerr spatial self-cleaning of a pulsed beam can be obtained in an amplifying multimode optical fiber. An input peak power of 500 W only was sufficient to produce a quasi-single-mode emission from the double-clad ytterbium doped multimode fiber (YMMF) with non-parab...

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Published inOptics express Vol. 25; no. 5; pp. 4783 - 4792
Main Authors Guenard, R, Krupa, K, Dupiol, R, Fabert, M, Bendahmane, A, Kermene, V, Desfarges-Berthelemot, A, Auguste, J L, Tonello, A, Barthélémy, A, Millot, G, Wabnitz, S, Couderc, V
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 06.03.2017
Subjects
Optics
Physics
Kerr effect
Nonlinear wave mixing
Fiber optics sensors
Nonlinear optics fibers
Nonlinear optics transverse effects
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Summary:We experimentally demonstrate that Kerr spatial self-cleaning of a pulsed beam can be obtained in an amplifying multimode optical fiber. An input peak power of 500 W only was sufficient to produce a quasi-single-mode emission from the double-clad ytterbium doped multimode fiber (YMMF) with non-parabolic refractive index profile. We compare the self-cleaning behavior observed in the same fiber with loss and with gain. Laser gain introduces new opportunities to achieve spatial self-cleaning of light in multimode fibers at a relatively low power threshold.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.004783