New recording materials for holography

Some of the alternative silver halide materials that can be considered to replace the previous Agfa Holotest materials are discussed. The characteristics of Slavich and HRT materials are examined, including the special aspects of recording and processing ultrahigh-resolution silver halide materials. These materials can offer a significant improvement in product quality. The sensitivity is lower than that of Agfa materials but the signal-to-noise ratio and dynamic range is an improvement. Photopolymers are increasingly being used for mass production. Dupont’s OmniDex material, combined with their colour tuning film is an excellent material for this purpose as no wet processing is involved.