We have studied the polarization properties of phase conjugation by degenerate four-wave mixing resonantly enhanced by the sodium 3S1/2 → 6S1/2 two-photon-allowed transition. As predicted by third-order theories, this interaction leads to simultaneous conjugation of the optical wave front and state of polarization (vector phase conjugation) when the pump intensities are sufficiently weak. However, qualitatively different polarization behavior is observed for pump intensities near or above the two-photon saturation intensity.
© 1988 Optical Society of America
Original Manuscript: April 22, 1988
Manuscript Accepted: May 24, 1988
Published: August 1, 1988
Michelle S. Malcuit, Daniel J. Gauthier, and Robert W. Boyd, "Vector phase conjugation by two-photon-resonant degenerate four-wave mixing," Opt. Lett. 13, 663-665 (1988)