Dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates

• Published in: Opto-Electronic Advances Vol. 7; no. 1; p. 230108
• Main Authors: Liu, Yuncheng, Xu, Ke, Fan, Xuhao, Wang, Xinger, Yu, Xuan, Xiong, Wei, Gao, Hui
• Format: Journal Article
• Language: English
• Published: Institue of Optics and Electronics, Chinese Academy of Sciences 2024
• Subjects: bitwise operation; interactive display; meta-holography; ultra-high frame rate
• ISSN: 2096-4579
• DOI: 10.29026/oea.2024.230108

Interactive holography offers unmatched levels of immersion and user engagement in the field of future display. Despite of the substantial progress has been made in dynamic meta-holography, the realization of real-time, highly smooth interactive holography remains a significant challenge due to the computational and display frame rate limitations. In this study, we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates. To our knowledge, this is the first reported practical dynamic interactive metasurface holographic system. We spatially divided the metasurface device into multiple distinct channels, each projecting a reconstructed sub-pattern. The switching states of these channels were mapped to bitwise operations on a set of bit values, which avoids complex hologram computations, enabling an ultra-high computational frame rate. Our approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational platform. According to this methodology, we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay, color display, and on-the-fly hologram creation. Our technology presents an inspiration for advanced dynamic meta-holography, which is promising for a broad range of applications including advanced human-computer interaction, real-time 3D visualization, and next-generation virtual and augmented reality systems.