期刊
NANOSCALE
卷 10, 期 9, 页码 4237-4245出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr07154j
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资金
- Center for Advanced Meta-Materials (CAMM) - Ministry of Science, ICT and Future Planning as Global Frontier Research Project [CAMM-2014 M3A6B3063710, CAMM-2014 M3A6B3063708]
- Brain Korea 21 (BK21) project
- LGD-SNU Incubation program - LG Display
- Green Science program - POSCO, NRF Young Investigator program - Ministry of Science, ICT and Future Planning (MSIP) of Korean government [NRF-2015R1C1A1A02036464]
- National Research Foundation of Korea [2014M3A6B3063710, 2014M3A6B3063708, 22A20130012582] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Reconstruction of light profiles with amplitude and phase information, called holography, is an attractive optical technology with various significant applications such as three-dimensional imaging and optical data storage. Subwavelength spatial control of both amplitude and phase of light is an essential requirement for an ideal hologram. However, traditional holographic devices suffer from their restricted capabilities of incomplete modulation in both amplitude and phase of visible light; this results in sacrifice of optical information and undesirable occurrences of critical noises in holographic images. Herein, we have proposed a novel metasurface that is capable of completely controlling both the amplitude and phase profiles of visible light independently with subwavelength spatial resolution. The full, continuous, and broadband control of both amplitude and phase was achieved using X-shaped meta-atoms based on the expanded concept of the Pancharatnam-Berry phase. The first experimental demonstrations of the complete complex-amplitude holograms with subwavelength definition at visible wavelengths were achieved, and excellent performances with a remarkable signal-to-noise ratio as compared to those of traditional phase-only holograms were obtained. Extraordinary control capability with versatile advantages of our metasurface paves a way to an ideal holography, which is expected to be a significant advancement in the field of optical holography and metasurfaces.
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