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Holographic optical elements recorded in silver halide sensitized gelatin emulsions. Part I. Transmission holographic optical elements

机译:卤化银敏化明胶乳液中记录的全息光学元件。第一部分:透射全息光学元件

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Silver halide sensitized gelatin (SHSG) holograms are similar to holograms recorded in dichromated gelatin (DCG), the main recording material for holographic optical elements (HOE's). The drawback of DCG is its low sensitivity and limited spectral response. Silver halide materials can be processed in such a way that the final hologram will have properties like a DCG hologram. Recently this technique has become more interesting since the introduction of new ultra-high-resolution silver halide emulsions. An optimized processing technique for transmission HOE's recorded in these materials is introduced. Diffraction efficiencies over 90% can be obtained for transmissive diffraction gratings. Understanding the importance of the selective hardening process has made it possible to obtain results similar to conventional DCG processing. The main advantage of the SHSG process is that high-sensitivity recording can be performed with laser wavelengths anywhere within the visible spectrum. This simplifies the manufacturing of high-quality, large-format HOE's.
机译:卤化银敏化明胶(SHSG)全息图类似于重铬酸盐明胶(DCG)(全息光学元件(HOE)的主要记录材料)中记录的全息图。 DCG的缺点是灵敏度低和光谱响应受限。卤化银材料可以以这样的方式处理,使得最终的全息图将具有类似于DCG全息图的特性。自从引入新的超高分辨率卤化银乳剂以来,最近这项技术变得更加有趣。介绍了记录在这些材料中的传输HOE的优化处理技术。对于透射衍射光栅,可以得到超过90%的衍射效率。了解选择性硬化过程的重要性使得获得与传统DCG处理相似的结果成为可能。 SHSG工艺的主要优点是可以在可见光谱内任何位置使用激光波长进行高灵敏度记录。这简化了高质量,大幅面HOE的制造。

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