Eigenmodes of three-wave interactions in second-order [χ(2)] nonlinear materials are explored that have a no-energy-exchange property between all the waves. They are shown to exhibit cross-induced nonlinear refraction and to be ideal candidates for amplitude-dependent phase control in χ(2) materials that emulate nonlinear refractive-index effects in third-order [χ(3)] materials. It is shown that all these eigenmodes are spatially stable.
© 1993 Optical Society of AmericaFull Article | PDF Article
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