title: Spatiotemporal characterization of supercontinuum extending from the visible to the mid-infrared in a multimode graded-index optical fiber.
abstract: We experimentally demonstrate that pumping a graded-index multimode fiber with sub-ns pulses from a microchip Nd:YAG laser leads to spectrally flat supercontinuum generation with a uniform bell-shaped spatial beam profile extending from the visible to the mid-infrared at 2500 nm. We study the development of the supercontinuum along the multimode fiber by the cut-back method, which permits us to analyze the competition between the Kerr-induced geometric parametric instability and stimulated Raman scattering. We also performed a spectrally resolved temporal analysis of the supercontinuum emission.
authors.forename: K
authors.initials: K
authors.lastname: Krupa
authors.forename: C
authors.initials: C
authors.lastname: Louot
authors.forename: V
authors.initials: V
authors.lastname: Couderc
authors.forename: M
authors.initials: M
authors.lastname: Fabert
authors.forename: R
authors.initials: R
authors.lastname: Guenard
authors.forename: B M
authors.initials: BM
authors.lastname: Shalaby
authors.forename: A
authors.initials: A
authors.lastname: Tonello
authors.forename: D
authors.initials: D
authors.lastname: Pagnoux
authors.forename: P
authors.initials: P
authors.lastname: Leproux
authors.forename: A
authors.initials: A
authors.lastname: Bendahmane
authors.forename: R
authors.initials: R
authors.lastname: Dupiol
authors.forename: G
authors.initials: G
authors.lastname: Millot
authors.forename: S
authors.initials: S
authors.lastname: Wabnitz