Frequency-Resolved Spatial Beam Mapping in Multimode Fibers: Application to Mid-Infrared Supercontinuum Generation
Optics
2021-08-11 v1
Abstract
We present a new spatial-spectral mapping technique permitting to measure the beam intensity at the output of a graded-index (GRIN) multimode fiber with sub-nanometric spectral resolution. We apply this method to visualize the fine structure of the beam shape of a sideband generated at 1870 nm by geometric parametric instability (GPI) in a GRIN fiber. After spatial-spectral characterization, we amplify the GPI sideband with a Tm-doped fiber amplifier to obtain a microjoule-scale picosecond pump whose spectrum is finally broadened in a segment of InF3 optical fiber to achieve supercontinuum ranging from 1.7 {\mu}m up to 3.4 {\mu}m
Cite
@article{arxiv.2106.15837,
title = {Frequency-Resolved Spatial Beam Mapping in Multimode Fibers: Application to Mid-Infrared Supercontinuum Generation},
author = {Y. Leventoux and G. Granger and K. Krupa and T. Mansuryan and M. Fabert and A. Tonello and S. Wabnitz and V. Couderc and S. Fevrier},
journal= {arXiv preprint arXiv:2106.15837},
year = {2021}
}
Comments
4 pages, 6 Figures