Digital holography: technical problems and applications

摘要

Technical problems related to the determination of the holographic image field distribution and demonstrations that the holographic imaging can be reduced to the imaging by an optical system are presented. Formulae describing the holographic image of the point and the object field distributions are found. The influence of individual factors of the pupil function, such as a possibility of the reconstructed beam apodization, a difference between reconstructed and reference beams and focusing of the reference beam, is emphasized. Applications to the surface shape measurement using interferometric fringe projection system and the observation of object phase changes in real time are demonstrated.