Journal
OPTICS EXPRESS
Volume 25, Issue 5, Pages 4783-4792Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.004783
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Funding
- Horiba Medical and BPI-France
- Italian Ministry of University and Research (MIUR) [2012BFNWZ2, 2015KEZNYM]
- Horizon MSCA-RISE 2015 project CARDIALLY
- Russian Ministry of Science and Education [14.Y26.31.0017]
- IXCORE Research Foundation
- French National Research Agency (ANR) Labex ACTION
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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. (C) 2017 Optical Society of America
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