A new cubic nonlinear optical effect in which a linearly polarized wave propagating in a single quadratic medium is converted into a wave that is cross polarized to the input wave is observed in BBO crystal. The effect is explained by cascading of two different second-order processes: second-harmonic generation and difference frequency mixing.
© 2001 Optical Society of America
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(200.4740) Optics in computing : Optical processing
(230.5440) Optical devices : Polarization-selective devices
G. I. Petrov, O. Albert, J. Etchepare, and S. M. Saltiel, "Cross-polarized wave generation by effective cubic nonlinear optical interaction," Opt. Lett. 26, 355-357 (2001)