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COMPARISON OF METHODS FOR DETERMINING THE BIAS INDEX OF A DICHROMATED GELATIN HOLOGRAM

机译:确定明胶明胶全息图偏向指数的方法的比较

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Determination of the bias refractive index of a holographic emulsion before exposure and after development is an important factor in the design of holographic optical elements. Several experimental methods are discussed for determining the bias index of a volume hologram in dichromated gelatin, and the results for each technique are presented. It is shown experimentally that these measurement methods yield different results for the same hologram, and the cause of the differences is proposed to be a variation of the bias index with depth in the hologram. An index measurement technique is also presented that accounts for variation in the bias index and is shown to yield an accurate value for the bias index. [References: 23]
机译:全息照相乳剂在曝光之前和显影后的折射率的确定是全息光学元件设计中的重要因素。讨论了确定重铬酸盐明胶中体积全息图的偏差指数的几种实验方法,并给出了每种技术的结果。实验表明,对于同一个全息图,这些测量方法得出的结果不同,并且提出差异的原因是偏置指数随全息图中深度的变化。还提出了一种指数测量技术,该技术可解决偏差指数的变化,并显示出可产生偏差指数的准确值。 [参考:23]

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