title: Fourth-order cascaded Raman shift in AsSe chalcogenide suspended-core fiber pumped at 2 μm.
abstract: Cascaded Raman wavelength shifting up to the fourth order ranging from 2092 to 2450 nm is demonstrated using a nanosecond pump at 1995 nm in a low-loss As(38)Se(62) suspended-core microstructured fiber. These four Stokes shifts are obtained with a low peak power of 11 W, and only 3 W are required to obtain three shifts. The Raman gain coefficient for the fiber is estimated to (1.6±0.5)×10(-11) m/W at 1995 nm. The positions and the amplitudes of the Raman peaks are well reproduced by the numerical simulations of the nonlinear propagation.
authors.affiliation: ONERA - The French Aerospace Lab, F-91761 Palaiseau, France. mathieu.duhant@onera.fr
authors.forename: M
authors.initials: M
authors.lastname: Duhant
authors.forename: W
authors.initials: W
authors.lastname: Renard
authors.forename: G
authors.initials: G
authors.lastname: Canat
authors.forename: T N
authors.initials: TN
authors.lastname: Nguyen
authors.forename: F
authors.initials: F
authors.lastname: Smektala
authors.forename: J
authors.initials: J
authors.lastname: Troles
authors.forename: Q
authors.initials: Q
authors.lastname: Coulombier
authors.forename: P
authors.initials: P
authors.lastname: Toupin
authors.forename: L
authors.initials: L
authors.lastname: Brilland
authors.forename: P
authors.initials: P
authors.lastname: Bourdon
authors.forename: G
authors.initials: G
authors.lastname: Renversez