THIN LAYER MEDIUM FOR IRREVERSIBLE POLARIZATION HOLOGRAPH RECORDING

摘要

This medium finds application as a polarization light-divider - an optical element for use in devices for simultaneous measurement of quazimonochromatic light parameters, as well as a polarization holographic filter in systems for optical data treatment etc. The obtained polarization elements have improved diffraction efficiency in the closer IR area of the spectrum with a sufficiently large area, over 1 cm<2>. The medium represents a thin layer with an approximate thickness of 800 nm, obtained on a pretreated glass plate through evaporation of halcogenide- halogenide glass derived from the Se-Ag-J system. Specifically, the glass product used for obtaining the film has the following composition - Se70Ag15J15. Polarization holographic grids are prepared by direct polarization holographic recording in the blue area of the spectrum with no necessity for any further treatment after exposure.