Abstract

A new cascading technique has been devised to yield solutions for the electric space-charge field that is induced in a photorefractive medium when a sinusoidal electric field and a running light interference pattern are imposed simultaneously. The cascading iteration technique offers rapid convergence to the exact solution. In addition, an advantage of the technique is that it can be used in situations when more than one frequency is present in the problem at hand. The results compare favorably with those of experiments after only a few cascading iterations, and a new low-frequency resonance is found in the space-charge field.

© 1998 Optical Society of America

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