Compensation for self-focusing by use of cascade quadratic nonlinearity.
We demonstrate theoretically and experimentally compensation for positive Kerr phase shifts with negative phases generated by cascade quadratic processes. Experiments show correction of small-scale self-focusing and whole-beam self-focusing in the spatial domain and self-phase modulation in the temporal domain.
K
K
Beckwitt
F W
FW
Wise
L
L
Qian
L A
LA
Walker Ii
E
E
Canto-Said