Complex optical holograms

摘要

This paper discusses three forms of complex holograms, described by means of complex Fourier, Fresnel, and Hartley transformations. Digital models of these holograms and algorithms for modelling them digitally are presented. It is shown that the reflectance and the phase variation upon reflection from the surface of an object can be determined not only from the reconstructed image but also by analyzing the structure of the recorded pair of quadrature components of a complex hologram.