Octave-spanning spectra and pulse synthesis by nondegenerate cascaded four-wave mixing.
We present a theoretical model and 2D numerical simulation of cascaded four-wave mixing of femtosecond pulses in bulk chi((3)) media, evidencing the importance of 2D interaction geometries in the efficient generation of frequency-converted pulses. Octave-spanning spectra and pulse synthesis down to the sub-two-cycle regime is demonstrated without the need for complex amplitude or phase control, in agreement with experimental measurements.
Silva
João L
JL
IFIMUP/IN-Institute of Nanoscience and Nanotechnology and Departamento de Física, Faculdade de Ciências,Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
Weigand
Rosa
R
Crespo
Helder M
HM