Kerr beam self-cleaning on the $LP_{11}$ mode in graded-index multimode fiber

E. Deliancourt; M. Fabert; A. Tonello; K. Krupa; A. Desfarges-Berthelemot; V. Kermene; G. Millot; A. Barthélémy; S. Wabnitz; V. Couderc

Kerr beam self-cleaning on the $LP_{11}$ mode in graded-index multimode fiber

Optics 2018-10-15 v2

Authors: E. Deliancourt , M. Fabert , A. Tonello , K. Krupa , A. Desfarges-Berthelemot , V. Kermene , G. Millot , A. Barthélémy , S. Wabnitz , V. Couderc

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Abstract

We report the experimental observation of Kerr beam self-cleaning in a graded-index multimode fiber, leading to output beam profiles different from a bell shape, close to the $LP_{01}$ mode. For specific coupling conditions, nonlinear coupling among the guided modes can reshape the output speckle pattern generated by a pulsed beam into the low order $LP_{11}$ mode. This was observed in a few meters long multimode fiber with 750 ps pulses at 1064 nm in the normal dispersion regime. The power threshold for $LP_{11}$ mode self-cleaning was about three times larger than that required for Kerr nonlinear self- cleaning into the $LP_{01}$ mode.

Keywords

Kerr beam self-cleaning graded-index multimode fiber LP_{11} mode nonlinear mode coupling speckle pattern

Cite

@article{arxiv.1807.00563,
  title  = {Kerr beam self-cleaning on the $LP_{11}$ mode in graded-index multimode fiber},
  author = {E. Deliancourt and M. Fabert and A. Tonello and K. Krupa and A. Desfarges-Berthelemot and V. Kermene and G. Millot and A. Barthélémy and S. Wabnitz and V. Couderc},
  journal= {arXiv preprint arXiv:1807.00563},
  year   = {2018}
}

Comments

4 pages, 8 figures

Kerr beam self-cleaning on the $LP_{11}$ mode in graded-index multimode fiber

Abstract

Keywords

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