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VOLUME 60 (1994) | ISSUE 9 | PAGE 629
Modulational instability at sum and difference frequencies in media with a high-order nonlinearity
As electromagnetic waves of frequency ω0 propagate through a medium with a nonlinear polarization of order 2N+1, an instability can occur at sum and difference frequencies, il2 and il2, which satisfy the condition 2Μω0 = Ω1 + Ω2, where Μ is an integer ^N, The conditions for the onset of this instability are determined. © 1994 American Institute of Physics.