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.
© 2001 Optical Society of America
Kale Beckwitt, Frank W. Wise, Liejia Qian, Larry A. Walker II, and Edesly Canto-Said, "Compensation for self-focusing by use of cascade quadratic nonlinearity," Opt. Lett. 26, 1696-1698 (2001)