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The possibility of implementing logical operations for images using accumulated echo-hologram with or without phase difference between pairs of exciting pulses is considered. The possibility for performing a number of logical operations with images in a nano time domain (union of sets, difference of sets, intersection of sets, symmetric difference) is show, which leads to appropriate filtering and image processing.

This paper discusses the correlation of inhomogeneous broadening at various frequency transitions in three-level systems and how it affects the intensity of the stimulated-photon-echo response. It is shown that the correlation coefficient of inhomogeneous broadening at two different energy transitions and the response intensity of the stimulated photon echo depends on the random interaction parameter m of an optical electron with the local field, which in turn depends on the unequal-spacing parameter of the spectrum of the system.