<title>Problems In Coherent-Light Microscopy</title>

Abstract

Hologram microscopy at the present time is not only faced with serious problems, but also with unique and exciting prospects for the future. Its principal area of difficulty, well recognized by researchers in the field, consists in the diffraction noise generated by edges, out of focus details in the specimen, lens imperfections, dust particles in the system, and "speckle noise", in the granularity associated with stationary interference patterns in space whenever coherent light is trans-mitted or reflected in diffuse fashion.