Abstract

In our experiments, we reveal a so-far unnoticed power limitation of beam self-cleaning in graded-index nonlinear multimode optical fibers. As the optical pulse power is progressively increased, we observed that the initial Kerr-induced improvement of the spatial beam quality is eventually lost. Based on a holographic mode decomposition of the output field, we show that beam spoiling is associated with high-temperature wave thermalization, which depletes the fundamental mode in favor of a highly multimode power distribution.

© 2023 Optica Publishing Group

Modal phase-locking in multimode nonlinear optical fibers

Fabio Mangini, Mario Ferraro, Yifan Sun, Mikhail Gervaziev, Pedro Parra-Rivas, Denis S. Kharenko, Vincent Couderc, and Stefan Wabnitz
Opt. Lett. 48(14) 3677-3680 (2023)

Statistical mechanics of beam self-cleaning in GRIN multimode optical fibers

F. Mangini, M. Gervaziev, M. Ferraro, D. S. Kharenko, M. Zitelli, Y. Sun, V. Couderc, E. V. Podivilov, S. A. Babin, and S. Wabnitz
Opt. Express 30(7) 10850-10865 (2022)

Nonlinear polarization dynamics of Kerr beam self-cleaning in a graded-index multimode optical fiber

Katarzyna Krupa, Graciela Garmendia Castañeda, Alessandro Tonello, Alioune Niang, Denis S. Kharenko, Marc Fabert, Vincent Couderc, Guy Millot, Umberto Minoni, Daniele Modotto, and Stefan Wabnitz
Opt. Lett. 44(1) 171-174 (2019)

Kerr self-cleaning of femtosecond-pulsed beams in graded-index multimode fiber

Zhanwei Liu, Logan G. Wright, Demetrios N. Christodoulides, and Frank W. Wise
Opt. Lett. 41(16) 3675-3678 (2016)

Interplay of Kerr and Raman beam cleaning with a multimode microstructure fiber

R. Dupiol, K. Krupa, A. Tonello, M. Fabert, D. Modotto, S. Wabnitz, G. Millot, and V. Couderc
Opt. Lett. 43(3) 587-590 (2018)