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首页> 外文期刊>Applied optics >Rigorous coupled-wave analysis for practical planar dielectric gratings: 1. Thickness-changed holograms and some characteristics of diffraction efficiency
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Rigorous coupled-wave analysis for practical planar dielectric gratings: 1. Thickness-changed holograms and some characteristics of diffraction efficiency

机译：实用平面介质光栅的严格耦合波分析：1.厚度变化的全息图和衍射效率的一些特征

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摘要

A new and useful method for obtaining diffraction efficiencies from holograms manufactured practically is presented. Applying the rigorous coupled-wave analysis, we express each difference between the practical and the ideal as a mathematical component that can be easily integrated. In Part 1 the effects due to thickness change in the hologram layer (observed frequently after the development process) are treated. Although uniform swelling or shrinking causes a simple reconstruction wavelength or incidence-angle shift, nonuniform thickness extends the capacity of the Bragg condition matching, creating a diffraction efficiency curve in the asymmetric profile. Other characteristics of diffraction are also maintained. A refractive-index change has an effect that is similar to the thickness change. Higher-order terms in permittivity modulation create negligible effects in general holograms when used at or near the simple first-order Bragg condition. (C) 1998 Optical Society of America. [References: 33]
机译：提出了一种新的有用的方法，用于从实际制造的全息图中获得衍射效率。应用严格的耦合波分析，我们将实际和理想之间的每个差异表示为易于集成的数学组件。在第1部分中，处理了由于全息图层厚度变化（在显影过程后经常观察到）而产生的影响。尽管均匀的膨胀或收缩会导致简单的重建波长或入射角偏移，但不均匀的厚度会扩展布拉格条件匹配的能力，从而在非对称轮廓中创建衍射效率曲线。衍射的其他特征也得以保持。折射率变化具有与厚度变化相似的效果。当在简单的一阶布拉格条件下或附近使用时，介电常数调制中的高阶项对普通全息图的影响可忽略不计。 （C）1998年美国眼镜学会。 [参考：33]

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