Portal de Periódicos da CAPES

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

2018; Optica Publishing Group; Volume: 43; Issue: 3 Linguagem: Inglês

10.1364/ol.43.000587

1539-4794

R. Dupiol, Katarzyna Krupa, Alessandro Tonello, Marc Fabert, D. Modotto, S. Wabnitz, G. Millot, Vincent Couderc,

Advanced Fiber Laser Technologies

We experimentally study the competition between Kerr beam self-cleaning and Raman beam cleanup in a multimode air–silica microstructure optical fiber. Kerr beam self-cleaning of the pump is observed for a certain range of input powers only. Stokes Raman beam generation and cleanup lead to both depletion and degradation of beam quality for the pump. The interplay of modal four-wave mixing and Raman scattering in the infrared domain leads to the generation of a multimode supercontinuum ranging from 500 nm up to 1800 nm.