Incorporation of copper into a recording material of poly (vinyl alcohol) with Iron (Ⅲ) Chloride is observed to give improved its characteristics as holographic recording medium. We show preliminary results; transmission gratings were recorded in the photopolymer films using a diode laser (445 nm). Copper-doped films showed good energy sensitivity and gratings recorded in films exhibited a diffraction efficiency of 20% at first order. This material have great advantages such as real-time image development, self-processing and high photosensitivity.
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