Filtering and Conversion of Information in Echo-Holography

The filtering of optical signals and the transformation of information using a stimulated echo hologram in the presence of external spatially inhomogeneous electric fields for the case when it is excited using an object laser pulse carrying information and a pulse acting as a frequency filter are considered. The reproducibility of information embedded in the temporal form of an object laser pulse is shown to depend on the duration, amplitude, area of exciting pulses, and magnitudes of gradients of external spatially inhomogeneous electric fields. Variation of the magnitudes of the gradients of external spatially inhomogeneous electric fields makes it possible to control the efficiency of conversion and filtering of information recorded in a stimulated echo hologram, which can be used to create an echo holographic processor.