@article{3ab56b50fe494dfbaeccba4cbc534918,
title = "Spatial Beam Self-Cleaning in Tapered Yb-Doped GRIN Multimode Fiber with Decelerating Nonlinearity",
abstract = "We experimentally demonstrate spatial beam self-cleaning in an Yb-doped graded-index multimode fiber taper, both in passive and active configurations. The input laser beam at 1064 nm was injected for propagation from the small to the large core side of the taper, with laser diode pumping in a counterdirectional configuration. The Kerr effect permits to obtain high-beam quality amplification with no accompanying frequency conversions. As a result, our nonlinear taper amplifier may provide an important building block for multimode fiber lasers and amplifiers.",
keywords = "Fiber nonlinear optics, optical fiber amplifiers, QUALITY, CAVITY, SUPERCONTINUUM GENERATION, INTERFERENCE",
author = "Alioune Niang and Daniele Modotto and Alessandro Tonello and Fabio Mangini and Umberto Minoni and Mario Zitelli and Marc Fabert and Jima, {Mesay Addisu} and Egorova, {O. N.} and Levchenko, {Andrey E.} and Semjonov, {Sergei L.} and Lipatov, {Denis S.} and Sergey Babin and Vincent Couderc and Stefan Wabnitz",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = apr,
doi = "10.1109/JPHOT.2020.2979938",
language = "English",
volume = "12",
journal = "IEEE Photonics Journal",
issn = "1943-0655",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "2",
}