Second Harmonic Generation and Beam Cleaning in Optically Poled Multimode Graded-Index Fibers

Davide Ceoldo; Katarzyna Krupa; Katarzyna Krupa; Alessandro Tonello; Vincent Couderc; Daniele Modotto; Umberto Minoni; Guy Millot; Stefan Wabnitz; Stefan Wabnitz

2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
(Optica Publishing Group, 2017),
paper CD_P_4

Second Harmonic Generation and Beam Cleaning in Optically Poled Multimode Graded-Index Fibers

Davide Ceoldo, Katarzyna Krupa, Alessandro Tonello, Vincent Couderc, Daniele Modotto, Umberto Minoni, Guy Millot, and Stefan Wabnitz

The European Conference on Lasers and Electro-Optics 2017

Munich Germany
25–29 June 2017
ISBN: 978-1-5090-6736-7

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D. Ceoldo, K. Krupa, A. Tonello, V. Couderc, D. Modotto, U. Minoni, G. Millot, and S. Wabnitz, "Second Harmonic Generation and Beam Cleaning in Optically Poled Multimode Graded-Index Fibers," in 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference, (Optica Publishing Group, 2017), paper CD_P_4.

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Abstract

Recent experimental results have confirmed that nonlinear effects in multimode graded-index (MM-GRIN) fibers lead to a wealth of observable spatiotemporal effects. In spite of the large number of modes supported by the fiber, by increasing the input power the transverse profile evolves in a clean bell-shaped beam [1,2]. Next, the input laser line experiences a strong spectral broadening and Geometric Parametric Instability (GPI) peaks are observed [3].

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