title: Direct detection of optical phase conjugation in a colloidal medium.
abstract: Degenerate four-wave mixing is demonstrated using an artificial Kerr medium and is evidenced by directly observing the phase conjugation of a vortex signal beam. The nonlinear susceptibility is produced by a refractive index grating created in a suspension of dielectric microscopic particles optically confined in the intensity grating distribution of two interfering laser beams.
authors: Photonics and Mathematical Optics Group, Tecnológico de Monterrey 64849, México. clmariscal@itesm.mx
authors: Carlos
authors: C
authors: López-Mariscal
authors: Julio C
authors: JC
authors: Gutiérrez-Vega
authors: David
authors: D
authors: McGloin
authors: Kishan
authors: K
authors: Dholakia