Three - frequency $(ω_{1}+ω_{2}=ω_{p})$ parametric interaction between nonmono-chromatic waves is considered under conditions when the effect of dispersion on the no - load wave($ω_{2}$)is significantly greater than on the signal wave ($ω_{1}$). Conditions under which the no - load wave can be regarded as monochromatic are determined. The roots of the characteristic equation are investigated in this approximation, and an exact solution is obtained of abbreviated equations for amplitudes with consideration of boundary conditions.
Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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