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首页> 外文期刊>Optical and quantum electronics >Diffraction characteristics of phase shifted orthogonal zone plate: 3D focusing properties
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Diffraction characteristics of phase shifted orthogonal zone plate: 3D focusing properties

机译：相移正交波带片的衍射特性：3D聚焦特性

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摘要

We are about to introduce a phase shifted orthogonal zone plate that is a special kind of orthogonal zone plate in which its phase profile is transversely and equally shifted along horizontal and vertical directions. It is demonstrated that the phase shift causes the focal spot to be split into four completely identical spots. It is also illustrated that the quadruplet spots are formed at the vertices of a square in which their separations are a function of a so called shifting parameter which manages the interval easily and accurately. As well as, we show that the spots are joined together at a given distance from the focus and generate a long depth focal spot. Theory and numerical simulations of focusing properties of the phase shifted orthogonal zone plate are presented, along with 3D representation. Simulation results are also verified by experiments.
机译：我们将要介绍一种相移正交波带片，它是一种特殊的正交波带片，其相位分布沿水平和垂直方向横向且均等地偏移。证明了相移导致焦点被分成四个完全相同的点。还示出了四倍体斑点形成在正方形的顶点处，其中它们的间隔是所谓的移位参数的函数，该移位参数容易且准确地管理间隔。以及，我们表明这些点在距焦点的给定距离处连接在一起，并生成了一个长深度的焦点。介绍了相移正交波带片聚焦特性的理论和数值模拟，以及3D表示。仿真结果也通过实验验证。

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