Abstract

The Bragg solitary waves in the form of five-wave weakly coupled states, occurring within a four-order non-collinear scattering of light by acoustic wave in an optically anisotropic tellurium dioxide (TeO<sub>2</sub>) crystal, are considered. An exact analytical description, based on the amplitude evolution equations including the phase mismatches, is adduced. The photo-elastic effect with contributions of the optical activity is estimated in a tellurium dioxide crystal. Originating five-wave weakly coupled acousto-optical states is developed through formulation of the localization conditions for multi-pulse states in the case of an exact phase synchronism. Spatial distributions for the optical components of multi-pulse coupled states are simulated and discussed.

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