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arXiv · 1912.11184

Full-color complex-amplitude vectorial holograms based on multi-freedom metasurfaces

Zi-Lan Deng·Mingke Jin·Xuan Ye·Shuai Wang·Tan Shi·Junhong Deng·Ningbin Mao·Yaoyu Cao·Bai-Ou Guan·Andrea Alù·Guixin Li·Xiangping Li
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Abstract

Phase, polarization, amplitude and frequency represent the basic dimensions of light, playing crucial roles for both fundamental light-mater interactions and all major optical applications. Metasurface emerges as a compact platform to manipulate these knobs, but previous metasurfaces have limited flexibility to simultaneous control them. Here, we introduce a multi-freedom metasurface that can simultaneously and independently modulate phase, polarization and amplitude in an analytical form, and further realize frequency multiplexing by a k-space engineering technique. The multi-freedom metasurface seamlessly combine geometric Pancharatnam-Berry phase and detour phase, both of which are frequency-independent. As a result, it allows complex-amplitude vectorial hologram at various frequencies based on the same design strategy, without sophisticated nanostructure searching of massive size parameters. Based on this principle, we experimentally demonstrate full-color complex-amplitude vectorial meta-holograms in the visible with a metal-insulator metal architecture, unlocking the long-sought full potential of advanced light field manipulation through ultrathin metasurfaces.

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Zi-Lan Deng, Mingke Jin, Xuan Ye, Shuai Wang, Tan Shi, Junhong Deng, Ningbin Mao, Yaoyu Cao, Bai-Ou Guan, Andrea Alù, Guixin Li, Xiangping Li. 2019-12-24. Full-color complex-amplitude vectorial holograms based on multi-freedom metasurfaces. https://doi.org/10.1002/adfm.201910610

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