Phase mismatching in a perturbational approach to degenerate four-wave mixing

Mattias Johnsson, Eugeny Korsunsky, Michael Fleischhauer

Ning Jia, Hamid Reza Hamedi, Jing Qian

S. Saikan, H. Wakata

Backward nearly degenerate four-wave mixing close to the atomic resonance line has been investigated experimentally. It has been found that phase mismatch provides a window factor to the reflectivity that masks the frequency spectrum of the medium and that the line profile depends on the geometrical configuration of the three interacting beams. The capability of obtaining an optical bandpass filter with nearly degenerate four-wave mixing has also been demonstrated experimentally.

Qiguang Yang, G. Xu, X. Liu +2 more

Paul Michael Petersen

B. Crosignani, Amnon Yariv

We derive the set of coupled equations that describes the process of degenerate four-wave mixing in the presence of spatially nonuniform pump-beam wave fronts. We investigate the influence of phase mismatch between plane-wave pump beams on the efficiency and on the fidelity of the phase-conjugation process, and we furnish, in the near-collinear geometry, the expression of the spatial degree of coherence of the phase-conjugate wave in terms of those of the input signal and of the pump beams.