Abstract

The spatial and temporal configuration of a degenerate four-wave mixing (DFWM) experiment have been analyzed. Numerical calculations and experiments show the clear dependence of the experimental signal value on the wave vector geometry. A commutative time symmetry method was applied to analyze data from DFWM measurements. The method permits the direct formulation of symmetry transformation rules that can be used to analyze the temporal shape of the diffracted pulse. This time symmetry approach was used to describe DFWM measurements on two third-order nonlinear materials, ${\mathrm{CS}}_2$ and polyacetylene thin films. The approach was used to analyze the slow decay temporal component region for DFWM experiments.

© 1999 Optical Society of America

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