Abstract

For the last decade dichromated gelatin (DCG) has been widely used as a recording material for the fabrication of high efficiency holographic optical elements (HOEs). Although DCG exhibits high diffraction efficiency () and a high signal-to-noise ratio (SNR) it is plagued with some severe drawbacks, such as (a) low environmental stability, (b) irreproducibility of results, and (c) cumbersome wet-processing procedures. Photopolymers and photo-cross-linking polymers seem to be good candidates to overcome some of these limitations.

© 1990 Optical Society of America