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通过基于离散卷积的向量点传播函数工程,通过高度散射介质快速生成完美的和向量束.

Yepeng Sun, Mingchao Zhu, Wei Miao

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    本研究介绍了一种新的方法,用于通过分散介质将光聚焦,使用基于离散卷积的向量点传播函数工程. 该技术能够快速聚焦完美的旋转束 (PVB) 和完美的矢量旋转束 (PVVB),并增强对极化和峰值与背景比的控制.

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 波工程 波工程
    • 散射媒体成像 散射媒体成像

    背景情况:

    • 通过高散射介质 (HSM) 聚焦和成像仍然是光学领域的一个重大挑战.
    • 波面造型为克服散射限制提供了潜在的解决方案.

    研究的目的:

    • 开发一种快速方法,通过HSM将完美束 (PVB) 和完美矢量束 (PVVB) 聚焦.
    • 加强对聚焦光的极化状态和峰值与背景比率 (PBR) 的控制.
    • 展示基于离散卷积的向量点传播函数 (DC-VPSF) 工程用于波面控制的应用.

    主要方法:

    • 使用基于离散卷积的矢量传输矩阵 (VTM) 运算符.
    • 采用数字光学相结合来计算所需的输入场.
    • 通过控制参数的HSM通过实验生成PVB和PVVB.

    主要成果:

    • 通过HSM成功快速聚焦具有不同拓电荷的PVB.
    • 产生可控制的极化状态和高PBR的PVB.
    • 通过HSM展示具有复杂偏振分布的PVVB.

    结论:

    • 与一般的点传播函数工程相比,开发的DC-VPSF工程方法在速度和PBR改进方面具有优势.
    • 这种方法为多度自由度的波浪前线控制提供了一个通用的框架.
    • 这些发现为光学微操作和通过散射介质成像提供了有希望的途径.