Ekim Utku, Özkutay Diğdem, Çelikbilek Ersundu Miray, Ersundu Ali Erçin
Yildiz Technical University, Faculty of Chemical and Metallurgical Engineering, Department of Metallurgical and Materials Engineering, Glass Research and Development Laboratory, Istanbul, 34220, Türkiye.
Light Sci Appl. 2025 Jan 2;14(1):15. doi: 10.1038/s41377-024-01672-2.
Three-dimensional (3D) imaging technology holds immense potential across various high-tech applications; however, current display technologies are hindered by limitations such as restricted viewing angles, cumbersome headgear, and limited multi-user accessibility. To address these challenges, researchers are actively exploring new materials and techniques for 3D imaging. Laser-based volumetric displays (VDs) offer a promising solution; nonetheless, existing screen materials fall short in meeting key requirements for long-term durability, full-color operation, and scalability. In this study, we present a comprehensive investigation into easily scalable rare-earth (RE) doped monolithic glasses (RE = Ho, Tm, Nd, Yb) capable of tunable full-color emission using a novel excitation modulation technique under 808 nm and 980 nm laser excitation and demonstrate their implementation as laser-based VD materials through prototyping. By controlling the movement of lasers' pulses and galvanometer mirrors with waveform generators, our system generates images in simple and complex shapes with high purity red, green, and blue (RGB) colors. These images can be manipulated, including actions like translation, rotation, expansion, and sequential movement within the monolithic glass screen material. Our findings showcase the potential of glass-based dynamic VDs in revolutionizing display technology, offering superior color purity, vividness, and performance in comparison to conventional display systems.
三维（3D）成像技术在各种高科技应用中具有巨大潜力；然而，当前的显示技术受到诸如视角受限、头戴设备笨重以及多用户可及性有限等限制。为应对这些挑战，研究人员正在积极探索用于3D成像的新材料和技术。基于激光的体视显示器（VDs）提供了一个有前景的解决方案；尽管如此，现有的屏幕材料在满足长期耐用性、全彩操作和可扩展性等关键要求方面存在不足。在本研究中，我们对易于扩展的稀土（RE）掺杂整体玻璃（RE = Ho、Tm、Nd、Yb）进行了全面研究，这些玻璃能够在808 nm和980 nm激光激发下使用新型激发调制技术实现可调全彩发射，并通过原型制作展示了它们作为基于激光的VD材料的应用。通过用波形发生器控制激光脉冲和振镜的运动，我们的系统生成具有高纯度红、绿、蓝（RGB）颜色的简单和复杂形状的图像。这些图像可以进行操作，包括在整体玻璃屏幕材料内的平移、旋转、扩展和顺序移动等动作。我们的研究结果展示了基于玻璃的动态VDs在革新显示技术方面的潜力，与传统显示系统相比，具有更高的颜色纯度、鲜艳度和性能。
