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On-chip meta-optics for semi-transparent screen display in sync with AR projection
Optica ( IF 10.4 ) Pub Date : 2022-06-17 , DOI: 10.1364/optica.456463
Yangyang Shi , Chengwei Wan , Chenjie Dai , Shuai Wan , Yang Liu , Chen Zhang , Zhongyang Li

On-chip integrated meta-optics could enable high-performance, lightweight, and compact integrated photonic devices for augmented reality (AR). Despite previous endeavors in controlling guided waves for holographic phase control, such devices lack versatile performance with the full optical controllability in both amplitude and phase needed to generate multi-functional displays. Here, we propose and experimentally demonstrate an on-chip metasurface integrated on a waveguide to enable a multiplexing semi-transparent screen display in sync with an AR holographic display for human eyes. Through judicious engineering of on-chip meta-diatom displacement and interference at the nanoscale, we can locally modulate the on-chip optical scattering intensities to create a semi-transparent screen display. More intriguingly, we can project a simultaneous dual-channel AR holographic display by incorporating independent encoding freedom of its detour phase. Beyond the all-dielectric properties and high transparency, the projected AR images are free of zeroth-order diffraction interference due to the on-chip optical propagation scheme. We envision that the proposed on-chip meta-optic display could be readily applied to next-generation wearable AR displays, multiplexing optical displays, colored signage, information storage/encryption, and cosmetic visual applications.

中文翻译:

用于与 AR 投影同步的半透明屏幕显示的片上元光学

片上集成元光学可以实现用于增强现实 (AR) 的高性能、轻量级和紧凑型集成光子器件。尽管先前在控制用于全息相位控制的导波方面做出了努力,但此类设备缺乏通用性能以及生成多功能显示器所需的幅度和相位的完全光学可控性。在这里,我们提出并通过实验演示了一种集成在波导上的片上超表面,以实现与人眼 AR 全息显示器同步的多路复用半透明屏幕显示。通过对片上硅藻位移和纳米级干涉的明智工程,我们可以局部调制片上光学散射强度以创建半透明屏幕显示。更耐人寻味的是,我们可以通过结合其迂回阶段的独立编码自由度来投射同时的双通道AR全息显示。除了全介电特性和高透明度之外,由于片上光传播方案,投影的 AR 图像没有零级衍射干扰。我们设想所提出的片上元光学显示器可以很容易地应用于下一代可穿戴 AR 显示器、多路复用光学显示器、彩色标牌、信息存储/加密和美容视觉应用。
更新日期:2022-06-17
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