Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity
Optics
2020-01-03 v1
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
Cite
@article{arxiv.2001.00105,
title = {Spatial beam self-cleaning in tapered Yb-doped GRIN multimode fiber with decelerating nonlinearity},
author = {A. Niang and D. Modotto and A. Tonello and F. Mangini and U. Minoni and M. Zitelli and M. Fabert and M. A. Jima and O. N. Egorova and A. E. Levchenko and S. L. Semjonov and D. S. Lipatov and S. Babin and V. Couderc and S. Wabnitz},
journal= {arXiv preprint arXiv:2001.00105},
year = {2020}
}