Vol. 11, issue 11, article # 14

pdf Nikitenko K. Yu., Trofimov V. A. Phase conjugation and instability in an interaction of Gaussian diffracting light beams propagating in opposite directions through media with the Kerr nonlinearity. I. Conditions of the convective instability development. // Atmospheric and oceanic optics. 1998. V. 11. No. 11. P. 1066-1070.
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Development of perturbations is analyzed for non-stationary interaction of two counterpropagating noncollinear light beams. Invariants of interaction are written down. Dependences of amplification increment on the perturbation frequency are derived. It is shown that noncollinearity of interaction enriches a range of spatial frequencies, at which the convective instability develops. The range of extended frequency spectrum is determined by the sign of self-action.