Tailoring arbitrary polarization states of light through scattering media
Tailoring arbitrary polarization states of light through scattering media
复制标题
通过散射介质定制光的任意偏振态
DOI：
10.1063/1.5048493
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发表时间：
2018
影响因子：
4
通讯作者：
Lei Gong
中科院分区：
文献类型：
--
作者：
Panpan Yu;Qian Zhao;Xinyao Hu;Yinmei Li;Lei Gong
具有空间变化偏振态（SOP）的光束近年来引起了越来越多的关注，因为它们的矢量性质给光学和光子学带来了独特的前景。然而，由于多重散射所产生的固有去极化效应，当将其转换为散射介质时，其应用受到挑战。波前成形技术预计将面临这些挑战，然而，除了通过散射介质的光的振幅和相位之外，还没有探索成形空间变化的SOP。在这里，我们提出了一个通用的框架的基础上的矢量传输矩阵，同时定制这些属性。此外，我们证明了它的使用中产生多个焦点和结构光束与空间变化SOP背后的散射介质，这是通过模拟证实。作为一个特定的应用，通过将信息编码到光的空间分布SOP中，我们能够直接将多路复用的灰度图像加密到散射介质后面的单个激光束中。我们的工作有望在深部组织光学成像、光学加密和通信等方面获得潜在的应用。空间变偏振态（SOPs）光束由于其矢量性质给光学和光子学带来了独特的前景，近年来引起了越来越多的关注。然而，由于多重散射所产生的固有去极化效应，当将其转换为散射介质时，其应用受到挑战。波前成形技术预计将面临这些挑战，然而，除了通过散射介质的光的振幅和相位之外，还没有探索成形空间变化的SOP。在这里，我们提出了一个通用的框架的基础上的矢量传输矩阵，同时定制这些属性。此外，我们证明了它的使用中产生多个焦点和结构光束与空间变化SOP背后的散射介质，这是通过模拟证实。作为一个特殊的应用，通过编码信息到光的空间分布的SOP，我们能够直接加密多路复用灰度图像…
Light beams with spatially variant states of polarization (SOPs) have attracted increasing interest recently because their vector nature brings unique perspectives to optics and photonics. Nevertheless, their applications are challenged when transposed to scattering media, because of the inherent depolarization effects arising from multiple scattering. Wavefront shaping techniques are expected to confront these challenges; however, shaping spatially variant SOPs in addition to amplitude and phase of light through scattering media has not been explored yet. Here, we present a general framework based on the vector transmission matrix to simultaneously tailor these properties. Further, we demonstrate its use in producing multiple focal spots and structured light beams with spatially variant SOPs behind the scattering media, which is confirmed by simulations. As a particular application, by encoding information into light's spatially distributed SOPs, we are able to directly encrypt multiplexed grayscale images into a single laser beam behind a scattering medium. Our work is expected to find potential applications such as optical imaging in deep tissues, optical encryption, and communication.Light beams with spatially variant states of polarization (SOPs) have attracted increasing interest recently because their vector nature brings unique perspectives to optics and photonics. Nevertheless, their applications are challenged when transposed to scattering media, because of the inherent depolarization effects arising from multiple scattering. Wavefront shaping techniques are expected to confront these challenges; however, shaping spatially variant SOPs in addition to amplitude and phase of light through scattering media has not been explored yet. Here, we present a general framework based on the vector transmission matrix to simultaneously tailor these properties. Further, we demonstrate its use in producing multiple focal spots and structured light beams with spatially variant SOPs behind the scattering media, which is confirmed by simulations. As a particular application, by encoding information into light's spatially distributed SOPs, we are able to directly encrypt multiplexed grayscale imag...