On reasons for fluctuations of the refractive index in photopolymer holograms

A statistical model of the development of fluctuations of the refractive in dex in a photopolymer hologram is considered within the framework of the Ma rkovian random process. It is shown that the reverse action of these inhomo geneities on the initializing radiation determines their amplitude to a gre at extent. Dependences of the level of noise of the hologram on the thickne ss of the polymerizing layer and the reflectance of its boundaries are stud ied theoretically and experimentally.