Supercontinuum generation by nanosecond dual-wavelength pumping in microstructured optical fibers.
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.
Räikkönen
E
E
Genty
G
G
Kimmelma
O
O
Kaivola
M
M
Hansen
K P
KP
Buchter
S C
SC