title: Supercontinuum generation by nanosecond dual-wavelength pumping in microstructured optical fibers.
abstract: We study experimentally the spectral evolution of supercontinua in two different microstructured fibers that are pumped with nanosecond pulses from dual-wavelength sources of either 1064/532 nm or 946/473 nm output. The experimental findings are compared with simulations based on numerically solving the nonlinear Schrödinger equation. The role of cascaded cross-phase modulation processes and the group-delay properties of the fiber are emphasized and demonstrated to determine the extent of the broadening of the continua to the visible wavelengths.
authors.forename: E
authors.initials: E
authors.lastname: Räikkönen
authors.forename: G
authors.initials: G
authors.lastname: Genty
authors.forename: O
authors.initials: O
authors.lastname: Kimmelma
authors.forename: M
authors.initials: M
authors.lastname: Kaivola
authors.forename: K P
authors.initials: KP
authors.lastname: Hansen
authors.forename: S C
authors.initials: SC
authors.lastname: Buchter