Shaping vector fields in three dimensions by random Fourier phase-only encoding.
Shaping vector fields in three dimensions by random Fourier phase-only encoding.
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DOI：
10.1364/oe.27.030009
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发表时间：
2019-10
期刊：
影响因子：
3.8
通讯作者：
Peng Li;Xinhao Fan;Dongjing Wu;Xuyue Guo;Yu Li;Sheng Liu;Jianlin Zhao
中科院分区：
文献类型：
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作者：
Peng Li;Xinhao Fan;Dongjing Wu;Xuyue Guo;Yu Li;Sheng Liu;Jianlin Zhao
同时控制三维（3D）空间中光场的多个参数的空间分布是非常期望的，因为其在光学成像、显微镜和操纵领域中的突出应用。纯相位编码技术，使用纯相位的计算全息图（CGH），以重塑和有效地重建目标领域已经引起了极大的兴趣。在本文中，我们提出了一种方便的编码方法，通过将傅立叶相位编码技术集成到修改的Sagnac偏振转换系统中，在三维空间中构造具有空间结构的多个参数的矢量场。在没有空间滤波的情况下，在图像平面上立即构造各种矢量场。此外，利用宏像素编码方法，我们证明了在3D空间中的多个矢量场的同时和独立的构造的可能性。该方法也可用于设计实现偏振全息图的超表面。
Simultaneously controlling the spatial distribution of multiple parameters of a light field in a three-dimensional (3D) space is highly desirable because of its prominent applications in the areas of optical imaging, microscopy, and manipulation. Phase-only encoding techniques that use a phase-only computer-generated hologram (CGH) to reshape and efficiently reconstruct target fields have fostered substantial interests. In this paper, we propose a convenient encoding method to construct vector fields with spatially structured multiple parameters in a 3D space by integrating the Fourier phase-only encoding technique into a modified Sagnac polarization conversion system. Without spatial filtering, various vector fields are constructed instantly at the image plane. Furthermore, utilizing a macro-pixel encoding approach, we demonstrate the possibility of a simultaneous and an independent construction of multiple vector fields in a 3D space. This method can also benefit the design of a metasurface to implement a polarization hologram.