Direct detection of optical phase conjugation in a colloidal medium.
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.
López-Mariscal
Carlos
C
Photonics and Mathematical Optics Group, Tecnológico de Monterrey 64849, México. clmariscal@itesm.mx
Gutiérrez-Vega
Julio C
JC
McGloin
David
D
Dholakia
Kishan
K