Nonlinear optical characterization in a degenerate multi-wave mixing configuration

Using a 4-f imaging system for nonlinear optical measurements we deal with multi-wave mixing experiments. The complex degenerate four-wave mixing experimental setup is simplified in order to characterize nonlinear materials. Moreover, a generalization of the I-scan method is studied by considering one, two, three and four waves mixing experiments. The determination of the cubic optical nonlinearity is possible by providing quadratic relations that relate the nonlinear phase shift to the measured signal. The sensitivities of the measurements are compared systematically showing the same order of magnitude for all the studied configurations. Experimental and simulated images are presented here to validate our approach.

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