Broadband Multiplane Holography Based on Plasmonic Metasurface
Broadband Multiplane Holography Based on Plasmonic Metasurface
复制标题
基于等离子体超表面的宽带多平面全息术
DOI：
10.1002/adom.201700434
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发表时间：
2017-09-18
影响因子：
9
通讯作者：
Wang, Yongtian
中科院分区：
文献类型：
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作者：
Wei, Qunshuo;Huang, Lingling;Wang, Yongtian
由于能够记录光的振幅和相位信息，全息被认为是重建生动的三维光学图像的最具吸引力的方法之一。近年来，由亚波长天线阵列组成的超表面由于其独特的光操纵能力而备受关注，可以重建任意波前，这为具有大信息容量的全息图提供了广阔的前景。本文以耦合二聚体为元件，实现了等离子体超表面具有大信息容量的多平面全息。本研究选择一种迭代三维Fienup算法来获得这类超表面全息图的相位轮廓。制作了两种不同的元全息图，实验验证了其位置和偏振复用能力，并分析了重建图像与目标物体之间的相关系数，以保证重建质量。这种超表面有望成为3D全息的一种出色的替代设备，并可用于各种实际应用，如光束整形、相位控制、光的自旋霍尔效应、隐形斗篷、数据存储等。
Because of its capability of recording both the amplitude and phase information of light, holography is considered as one of the most attractive approaches for reconstructing vivid 3D optical images. Recently, metasurfaces, consisting of arrays of subwavelength antennas, have drawn much attention due to their unique ability of light manipulation to enable the reconstruction of arbitrary wavefront, which promises a bright prospect for holograms with large information capacity. Here, multiplane holography with large information capacity by plasmonic metasurfaces using coupled dimers as components is realized. This study chooses an iterative 3D Fienup algorithm to get the phase profiles of such metasurface holograms. Two different metaholograms are fabricated to experimentally demonstrate the position and polarization multiplexing capacity, and the correlation coefficients between reconstructed images and target objects are analyzed to ensure the reconstruction quality. Such metasurfaces promise to be an outstanding alternative device for 3D holography and can be employed in various practical applications such as beam shaping, phase control, spin‐hall effect of light, invisibility cloaking, data storage, and so on.