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Colorful Metahologram with Independently Controlled Images in Transmission and Reflection Spaces
Author(s) -
Zhang Xiaohu,
Pu Mingbo,
Guo Yinghui,
Jin Jinjin,
Li Xiong,
Ma Xiaoliang,
Luo Jun,
Wang Changtao,
Luo Xiangang
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201809145
Subject(s) - holography , reflection (computer programming) , optics , transmission (telecommunications) , polarization (electrochemistry) , materials science , usable , viewing angle , diffraction , computer science , physics , liquid crystal display , telecommunications , chemistry , world wide web , programming language
Benefiting from the excellent properties of manipulating electromagnetic waves at subwavelength scale, metasurfaces are widely used to realize metaholograms with a large viewing angle or diffraction angle. However, all previously reported holograms just utilize transmission (or reflection) space while the corresponding reflection (or transmission) space is abandoned. In this paper, combining the off‐axis illumination method and polarization dependence of geometric‐phase‐based metasurfaces, a scheme is proposed to realize colorful metaholograms with independently controlled holographic images in both the transmission and reflection spaces. With this method, the usable data capacity and imaging region are greatly expanded. As far as it is known, it is the first time that independently controlled color holographic images in both the transmission and reflection spaces using metasurfaces is demonstrated. This approach has promising applications in real 360° holographic image, multifunctional optical device, multicolor display, etc.