Thermalization of orbital angular momentum beams in multimode optical fibers
Optics
2022-06-29 v1
Abstract
We present a general theory of thermalization of light in multimode optical fibers, including optical beams with nonzero orbital angular momentum or vortex beams. A generalized Rayleigh-Jeans distribution of asymptotic mode composition is obtained, based on the conservation of the angular momentum. We confirm our predictions by numerical simulations and experiments based on holographic mode decomposition of multimode beams. This establishes new constraints for the achievement of spatial beam self-cleaning, giving previously unforeseen insights into the underlying physical mechanisms.
Keywords
Cite
@article{arxiv.2112.13696,
title = {Thermalization of orbital angular momentum beams in multimode optical fibers},
author = {E. V. Podivilov and F. Mangini and O. S. Sidelnikov and M. Ferraro and M. Gervaziev and D. S. Kharenko and M. Zitelli and M. P. Fedoruk and S. A. Babin and S. Wabnitz},
journal= {arXiv preprint arXiv:2112.13696},
year = {2022}
}