D'Allessandro, G., Russell, P.St. J. and Wheeler, A.A.
Nonlinear dynamics of a backward quasi-phase-matched second harmonic generator.
Physical Review A, 55, (4), . (doi:10.1103/PhysRevA.55.3211).
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We study the stability of the interaction between a pump wave and a counter propagating second-harmonic wave phase-matched in a periodically poled ?(2) material using both analytical and numerical methods. In contrast to the more usual copropagating case, backward phase-matched frequency doubling displays richer and more complex behavior, owing to the presence of built-in feedback.
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