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首页> 外文会议>Conference on Practical Holography XVII and Holographic Materials IX Jan 21-23, 2003 Santa Clara, California, USA >New processing techniques for reflection holograms recorded on BB640 holographic emulsions
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New processing techniques for reflection holograms recorded on BB640 holographic emulsions

机译：BB640全息乳剂记录的反射全息图的新处理技术

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摘要

In this work we have studied the characteristics of reflection gratings recorded with BB640 emulsions from Colourholographics Ltd. processed with a set of different developers and bleaching techniques. Overall diffraction efficiencies evaluated with spectral response curves result in values higher than 70% (80% taking into account reflection losses) for conventional fixation free rehalogenating bleaching processes, with very low scattering. A slightly lower value was obtained with reversal bleaching techniques, but with lower scattering in the recordings. For the latter, an analytical analysis of the spectral responses based on the Kogelnik's theory has been performed, leading to anomalous results regarding physical thickness of the hologram and the reply wavelength, a performance that points towards holographic profile distortions. We have also used a completely different processing scheme based on Kodak D8, a developer never used in reflection holography, with a direct bleach rendering 40% diffraction efficiency, a broad bandwidth and a reconstruction wavelength longer than the recording one.
机译：在这项工作中，我们研究了用Colourholographics Ltd.的BB640乳剂记录的反射光栅的特性，该乳剂使用一组不同的显影剂和漂白技术进行处理。使用光谱响应曲线评估的总衍射效率得出的值高于常规固色无卤化漂白工艺的散射值，其值高于70％（考虑到反射损失，为80％）。使用逆向漂白技术可获得稍低的值，但记录中的散射较低。对于后者，已经进行了基于Kogelnik理论的光谱响应分析分析，从而导致了关于全息图物理厚度和回复波长的异常结果，这一性能指向全息图轮廓失真。我们还使用了基于柯达D8的完全不同的处理方案，该柯达D8是从未在反射全息术中使用的显影剂，直接漂白剂可实现40％的衍射效率，宽带宽和长于记录波长的重建波长。

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