二元相位光栅的分形衍射和聚焦特性

2010 9th Euro-American Workshop on Information Optics Pub Date : 2010-07-12 DOI:10.1109/WIO.2010.5582520

K. Brenner, R. Buschlinger

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引用次数: 0

摘要

我们观察到，一个简单的二元相位光栅在某些情况下表现出明显的聚焦特性。在近轴近似中，轴上强度作为光栅占空比的函数表现出完美的分形行为。讨论了近轴、非近轴和严格情况下透镜缩放和相位二值化的性质。此外，我们还研究了二元相位光栅的最佳聚焦条件。此外，还讨论了在光集中、图像扫描和波前传感方面的可能应用

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Fractal diffraction and focusing properties of binary phase gratings

We observed, that a simple binary phase grating under certain circumstances exhibits pronounced focusing properties. In the paraxial approximation, the on-axis intensity as a function of the grating duty cycle shows a perfect fractal behavior. We discuss the properties of lens scaling and phase binarization in the paraxial, the non-paraxial and the rigorous case. Furthermore, we investigate the optimal focusing conditions for binary phase gratings. Also, possible applications in light concentration, image scanning and wave-front sensing are discussed

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2010 9th Euro-American Workshop on Information Optics

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