76 citations · 213 across the 10 of their papers we have counts for
11 papers
Numerical analysis of beam self-cleaning in multimode fiber amplifiers
Mesay Addisu Jima, Alessandro Tonello, Alioune Niang +6
Recent experimental results have reported the observation of beam self-cleaning or, more generally, nonlinear beam reshaping in active multimode fibers. In this work we present a n…
Multiphoton ionization of standard optical fibers
M. Ferraro, F. Mangini, Y. Sun +11
Atoms ionization by the simultaneous absorption of multiple photons has found applications in fiber optics, where it leads to unique nonlinear phenomena. To date, studies of the io…
Spatiotemporal beam self-cleaning for high-resolution nonlinear fluorescence imaging with multimode fibres
Nawell Ould Moussa, Tigran Mansuryan, Charles Henri Hage +12
Beam self-cleaning (BSC) in graded-index (GRIN) multimode fibres (MMFs) has been recently reported by different research groups. Driven by the interplay between Kerr effect and bea…
Giving light a new twist with standard optical fibres: rainbow Archimedean spiral emission
F. Mangini, M. Ferraro, M. Zitelli +8
We demonstrate a new practical approach for generating multicolour spiral-shaped beams. It makes use of a standard silica optical fibre, combined with a titled input laser beam. Th…
Multiphoton absorption excited upconversion luminescence in optical fiber
F. Mangini, M. Ferraro, M. Zitelli +4
We experimentally demonstrate a novel nonlinear effect in optical fibers: upconversion luminescence generation excited by multiphoton absorption of femtosecond infrared pulses. We…
Coherent combining of self-cleaned multimode beams
Marc Fabert, Maria Săpânţan, Katarzyna Krupa +9
A low intensity light beam emerges from a graded-index, highly multimode optical fibre with a speckled shape, while at higher intensity the Kerr nonlinearity may induce a spontaneo…
Nonlinear beam self-imaging and self-focusing dynamics in a GRIN multimode optical fiber: theory and experiments
Tobias Hansson, Alessandro Tonello, Tigran Mansuryan +7
Beam self-imaging in nonlinear graded-index multimode optical fibers is of interest for many applications, such as implementing a fast saturable absorber mechanism in fiber lasers…
High-energy soliton fission dynamics in multimode GRIN fiber
Mario Zitelli, Fabio Mangini, Mario Ferraro +3
The process of high-energy soliton fission is experimentally and numerically investigated in a graded-index multimode fiber. Fission dynamics is analyzed by comparing numerical obs…
Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity
A. Niang, D. Modotto, A. Tonello +12
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…
Spatial Beam Self-Cleaning and Supercontinuum Generation with Yb-doped Multimode Graded-Index Fiber Taper Based on Accelerating Self-Imaging and Dissipative Landscape
A. Niang, T. Mansuryan, K. Krupa +7
We experimentally demonstrate spatial beam self-cleaning and supercontinuum generation in a tapered Ytterbium-doped multimode optical fiber with parabolic core refractive index and…
Nonlinear polarization dynamics of Kerr beam self-cleaning in a GRIN multimode optical fiber
Katarzyna Krupa, Graciela Garmendia Castañeda, Alessandro Tonello +8
We experimentally study polarization dynamics of Kerr beam self-cleaning in a graded-index multimode optical fiber. We show that spatial beam cleaning is accompanied by nonlinear p…