Abstract

We report experimental observations of the spatial splitting of a probe beam caused by a strong pump beam of different optical frequency. The measurements were performed in a self-defocusing nonlinear medium (semiconductor-doped glass). The physical interpretation of this phenomenon is based on the variation of the sample’s refractive index at the probe-beam frequency, which is due to the effect of spatial cross modulation induced by the pump beam.

© 1994 Optical Society of America

Propagation of an elliptic Gaussian laser beam in a medium with saturable nonlinearity

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