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

• Published in: Science advances Vol. 6; no. 28; p. eaba8595
• Main Authors: Gao, Hui, Wang, Yuxi, Fan, Xuhao, Jiao, Binzhang, Li, Tingan, Shang, Chenglin, Zeng, Cheng, Deng, Leimin, Xiong, Wei, Xia, Jinsong, Hong, Minghui
• Format: Journal Article
• Language: English
• Published: American Association for the Advancement of Science 01.07.2020
• Subjects: Optics; SciAdv r-articles
• ISSN: 2375-2548; 2375-2548
• DOI: 10.1126/sciadv.aba8595

A space channel design approach achieves dynamic meta-holography with high frame rate and large frame number. The hologram is an ideal method for displaying three-dimensional images visible to the naked eye. Metasurfaces consisting of subwavelength structures show great potential in light field manipulation, which is useful for overcoming the drawbacks of common computer-generated holography. However, there are long-existing challenges to achieving dynamic meta-holography in the visible range, such as low frame rate and low frame number. In this work, we demonstrate a design of meta-holography that can achieve 2 28 different holographic frames and an extremely high frame rate (9523 frames per second) in the visible range. The design is based on a space channel metasurface and a high-speed dynamic structured laser beam modulation module. The space channel consists of silicon nitride nanopillars with a high modulation efficiency. This method can satisfy the needs of a holographic display and be useful in other applications, such as laser fabrication, optical storage, optics communications, and information processing.