Waveguide-integrated on-chip meta-optics exhibit a promising platform for achieving high-performance and compact optical display devices. However, heading toward advanced wearable smart display technology, its broad implementation is critically restricted by the lack of practical active tuning capability. Despite previous endeavors, on-chip meta-optics still face crucial challenges in achieving any arbitrary vectorial wavefront with dynamic switchable ability. Here, a practical liquid crystal (LC)-driven on-chip metasurface integrated on a waveguide is proposed and demonstrated for dynamic vectorial augmented reality (AR) meta-holograms. By engineering the on-chip meta-diatoms at the nanoscale, the simultaneous modulation of arbitrary polarization and phase of the out-coupling lightwave can be achieved for up to nine-channel fully polarized vectorial meta-holograms. As a proof of concept, in combination with an electrical-driven LC tuning platform, integrated on-chip meta-optics can actively switch holographic images floating in the actual-world scene in real-time as dynamic AR meta-displays. Moreover, owing to the on-chip optical propagation scheme, the projected AR holograms are uniquely free from zero-order diffraction interference. It is envisioned that such on-chip dynamic vectorial meta-displays integrated with the LC platform allow for miniaturized integration and promise potential applications in advanced intelligent dynamic displays, multiplexing information storage/encryption, and next-generation wearable AR displays.

中文翻译：

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通过片上矢量元显示实现电力驱动的动态增强现实

波导集成片上元光学器件为实现高性能和紧凑型光学显示设备提供了一个有前途的平台。然而，在先进的可穿戴智能显示技术的发展中，其广泛实施却因缺乏实用的主动调节能力而受到严重限制。尽管之前做出了努力，片上元光学器件在实现具有动态可切换能力的任意矢量波前方面仍然面临着严峻的挑战。这里，提出并演示了一种集成在波导上的实用液晶（LC）驱动的片上超表面，用于动态矢量增强现实（AR）元全息图。通过在纳米尺度上设计片上元硅藻，可以实现对输出耦合光波的任意偏振和相位的同时调制，以获得多达九通道的全偏振矢量元全息图。作为概念验证，与电气驱动的 LC 调谐平台相结合，集成片上元光学器件可以主动切换实时漂浮在现实世界场景中的全息图像，作为动态 AR 元显示器。此外，由于采用片上光学传播方案，投影的 AR 全息图独特地不受零级衍射干扰。预计这种与 LC 平台集成的片上动态矢量元显示器可实现小型化集成，并有望在先进智能动态显示器、多路信息存储/加密和下一代可穿戴 AR 显示器中实现潜在应用。