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在芯片上的空间复杂化超表面用于多通道光场调制.

Yongqi Liu, Yi Lian, Pengfei Qi

    Optics express
    |August 13, 2025
    PubMed
    概括

    这项研究引入了一种能够同时控制空间和波导束的新型超表面. 这一突破使得多功能集成光学系统能够用于诸如全息显示器和光通信等应用.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 超材料科学科学 超材料科学
    • 综合光子学 综合光子学

    背景情况:

    • 在芯片上集成的超表面为全息显示器和光通信等应用提供先进的光场操纵.
    • 使用单个元表面同时调节空间和波导光束,这在集成光子学中是一个重大挑战.

    研究的目的:

    • 提出和演示一种超表面调制方法,用于同时控制来自多个光学通道的波导辐射,极化和动态波面.
    • 开发一个端到端的设计框架,以优化超表面参数和目标光场,而无需复杂的物理模型推断.

    主要方法:

    • 利用绕道阶段和潘查拉特纳姆-贝里阶段理论进行超表面设计.
    • 开发了一个端到端的框架,用于联合优化设计参数和光场操纵.
    • 在Si3N4波导上制造了多通道超表面的原型.

    主要成果:

    • 从五个入射光学通道实现了波导辐射,极化状态和动态波面的同时操纵.
    • 演示了三种类型的多通道超表面,展示全息显示,多聚焦和多通道旋转束生成.
    • 制造的超表面展示了高度的集成和易于实施.

    结论:

    • 拟议的超表面调制方法和设计框架能够在芯片上对光束进行前所未有的控制.

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  • 开发的多通道超表面为先进的多功能集成光学系统铺平了道路.
  • 这项工作在推进光通信和显示技术方面具有重大潜力.