When two mutually incoherent light beams are used as simultaneous inputs to a crystal of BaTiO3, a spontaneously generated loop of light is created that provides a coupling mechanism between the two input beams, resulting in two phase-conjugate outputs. This behavior is discussed, and the phase-conjugate reflectivities are presented as a function of the ratio of input-beam intensities. A simple theory is developed to describe this phenomenon, and the predictions are compared with experimental data.
© 1987 Optical Society of America
A. M. C. Smout and R. W. Eason, "Analysis of mutually incoherent beam coupling in BaTiO3," Opt. Lett. 12, 498-500 (1987)