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Dynamic 3D meta-holography in visible range with large frame number and high frame rate

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Science Advances  10 Jul 2020:
Vol. 6, no. 28, eaba8595
DOI: 10.1126/sciadv.aba8595
  • Fig. 1 Principle of dynamic space channel meta-hologram.

    (A) Structure of space channel meta-hologram element. (B and C) Space channel selective meta-hologram design. All reconstructed images overlap each other if all space channels were opened at the same time (B). Dynamic meta-holographic display can be achieved by opening space channels in the designed sequence (C). (D to G) Space channel multiplexing meta-hologram design. The reconstructed images of different space channels are subgraphs of a whole graph (D). Different space channels are opened in different time sequences to form different space channel combinations (E), which reconstruct different images (F) to achieve dynamic meta-holographic display (G).

  • Fig. 2 Realization of dynamic SCMH.

    (A) Dynamic space beam coding module. DMD modulates the incident light at a high speed, e.g., maximum 9523 Hz in our experiment. The lens and microscope objective perform as a 4f system to narrow the coded incident beam to illuminate the different regions of the metasurface. (B) Geometrical diagram of SiNx nanopillars and characterization of amplitude transmission efficiency and phase response of SiNx nanopillars as functions of nanopillar radius at a wavelength of 633 nm. The illustration is a geometrical diagram of SiNx nanopillars. (C and D) Scanning electron microscopy (SEM) images of the fabricated results. Scale bars, 1 μm.

  • Fig. 3 Design and experimental results of 28-bit dynamic space channel multiplexing meta-hologram.

    (A) Structured laser beam opens specific space channel combinations and reconstructs the target image. (B) First and third rows: 10 typical examples varying from 00:00 to 99:99; second and fourth rows: corresponding space channel coding pattern of DMD. (C) Optical image of fabricated metasurface and enlarged view of one space channel. Scale bars, 100 and 30 μm. (D) Experimental results of dynamic space channel multiplexing meta-hologram and corresponding pattern of structured laser beam.

  • Fig. 4 Design and experimental results of space channel selective meta-hologram.

    (A) Structured laser beam opens a specific space channel in the designed sequence, and (B) continuous frames of a holographic video are displayed. (C) A dynamic 3D holographic display is achieved by a space channel selective meta-hologram.

  • Table 1 Summary of different dynamic meta-holography.

    “/” means no related data in the references.

    Operation principleMethodsReferencesWorking modeWorking
    wavelength (nm)
    Frames numberFrame rate (fps)
    Active metasurfacesPhase-change
    material
    (11)Reflection473, 532, and 660No limitation in
    theory
    /
    Stretchable
    substrate
    (14)Transmission6336/
    Chemical reaction(17)Reflection633101/40
    Rewriting
    metasurface
    (13)Transmission405, 532, and 632No limitation in
    theory
    /
    Multiplexed
    metasurfaces
    Wavelength(30)Transmission380–7807/
    (31)Transmission473, 532, and 6333/
    Angle(32)Transmission4058/
    Polarization(33)Reflection405, 633, and 7803/
    (34)Transmission8007/
    (35)Transmission5322/
    (36)Reflection475–11005/
    OAM(37)Transmission6332N (for N-bit
    OAM-multiplexing
    hologram device)
    60
    Space channelCurrent work in this
    paper
    Transmission6332N (for N-bit space
    channel
    multiplexing
    hologram device)
    9523

Supplementary Materials

  • Supplementary Materials

    Dynamic 3D meta-holography in visible range with large frame number and high frame rate

    Hui Gao, Yuxi Wang, Xuhao Fan, Binzhang Jiao, Tingan Li, Chenglin Shang, Cheng Zeng, Leimin Deng, Wei Xiong, Jinsong Xia, Minghui Hong

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