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.
No takes yet. Share an insight, caveat, or question.
Crosignani et al. (1984) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: