Multi-Dimensional Light-Emitting Meta-Display: Photoluminescence and Pumping Light Multiplexing.

The advent of intelligent display devices has given rise to diverse and complex demands for miniature light-emitting devices. Light-emitting metasurfaces have emerged as a practical and efficient means of achieving precise light modulation. However, their practicality is limited by certain constraints. Firstly, there is a need for further exploration of the ability to manipulate both pumping and emitting light simultaneously. Secondly, there is currently no encoding freedom in multi-dimensional emitting light. To address these concerns, we propose using meta-atoms to encode both fluorescence and pumping light independently, and expand the encoding freedom with different incident wavevector directions. We further demonstrate a light-emitting metasurface with quad-fold multiplex encoding meta-displays, including dual scattering images and dual fluorescence images. Our design strategy not only manipulates both pumping and fluorescence light, but also broadens encoding freedom for comprehensive multi-functionality. This could pave the way for multiplexing optical displays, information storage, and next-generation wearable displays. This article is protected by copyright. All rights reserved.