We experimentally demonstrate degenerate, forward four-wave mixing effects in a self-defocusing photorefractive medium, in both one and two transverse dimensions. We observe the nonlinear evolution of new modes as a function of propagation distance, in both the near-field and far-field (Fourier space) regions.
© 2007 Optical Society of America
Original Manuscript: December 14, 2006
Revised Manuscript: March 5, 2007
Manuscript Accepted: April 6, 2007
Published: June 5, 2007
Shu Jia, Wenjie Wan, and Jason W. Fleischer, "Forward four-wave mixing with defocusing nonlinearity," Opt. Lett. 32, 1668-1670 (2007)