FEATURES OF HOLOGRAMS OF REGULAR OBJECTS
The article discusses some features of the phenomenon of self-reproduction, which are manifested during the restoration of holograms of regular objects, such as one-dimensional linear lattices. In contrast to the previously described schemes for recording and reconstructing holograms of regular objects, the mandatory requirement for which was the exact observance of the condition for the distance between the hologram and the lattice - the distance should be a multiple of the self-reproduction constant, in this study we consider a more general case of recording a hologram of a linear lattice, for which the distance between the planes of the lattice and the hologram is taken absolutely arbitrarily. It is shown that when restoring a regular periodic object, it is necessary to take into account that when restoring a hologram, not only lattice images appear, but the whole sequence of self-reproductions.An analysis of the restoration process with this approach shows that in this case, in both diffraction orders, objects capture both imaginary and real regions of space, i.e., dividing by imaginary and real images loses its meaning. Both images can be seen simultaneously in both diffraction orders in the case of restoration of the original reference wave or its conjugate. An important feature of the holographic process for a regular object is that the sequence of self-reproductions is also restored to the zero diffraction order, and this sequence is visible both as a real object and as an imaginary one.