Photosensitized polystyrene as a high efficiency relief hologram medium

The ideal holographic material would have the sensitivity and spatial resolution of silver halide emulsion, the efficiency of dichromated gelatine, the self developing feature of photorefractive crystals, and useful at all laser wavelengths. Unfortunately, no such material exists; those that do exist are characterized in the table below. Photoresist materials have proved especially disappointing. In spite of years of effort, the sensitivity, resolution, efficiency and ease of processing leave almost everything to be desired!. © 1989 SPIE.