Self-developing dichromated gelatin thick layers: manufacturing and control

Self-developing dichromated gelatin is holographic photosensitive medium that possesses the number of unique properties. Being illuminated by interferometric pattern it records the energy distribution, and in such way the gratings with high diffraction efficiency can be obtained. The absence of postexposure processing allows to use it for in-situ experiments. And besides the self-developing property of the material allows to create new kinds of optical elements based on very thick gratings that possess very high selectivity properties.