将传播不变性编码进光场

中文摘要 AI 辅助

衍射决定了光场沿轴向的演化，而传统全息合成主要控制其横向结构。在此，我们将轴向衍射管理作为额外的设计自由度，添加到全息术的横向场可编程性中，使得横向光学功能及其衍射驱动的轴向演化能够协同设计。通过将成熟的传播不变动力学纳入计算机生成全息图和超构全息图的合成中，我们在用户定义的单色、全彩色和矢量场中实现了任务可选的轴向响应。在空间光调制器上，相同的标量用户定义场可配置为快速演化的1.2厘米焦深或约75厘米的传播不变范围。毫米级超构表面进一步实现了米级无重聚焦全彩色投影和矢量彩色场，其偏振纹理在超过30厘米的距离内得以保持。这种横向-轴向协同设计框架将全息场合成扩展到横向可编程性之外，为任务可配置光学系统和紧凑型多维光子学提供了一条广泛兼容的路径。

英文摘要

Diffraction governs the axial evolution of optical fields, whereas conventional holographic synthesis primarily controls their transverse structure. Here we add axial diffraction management as an additional design freedom to the transverse_field programmability of holography, enabling the transverse optical function and its diffraction-driven axial evolution to be co_designed. By incorporating established propagation_invariant dynamics into computer_generated hologram and meta_hologram synthesis, we realize task_selectable axial responses in user_defined monochromatic, full-colour and vectorial fields. On a spatial light modulator, the same scalar user_defined field is configured either for a rapidly evolving 1.2_cm depth of field or for an approximately 75_cm propagation_invariant range. Millimetre_scale metasurfaces further enable metre_scale refocusing_free full_colour projection and vectorial colour fields with polarization textures preserved over more than 30 cm. This transverse_axial co_design framework extends holographic field synthesis beyond transverse programmability, providing a broadly compatible route towards task_configurable optical systems and compact multidimensional photonics.

发表机构

• National Laboratory of Solid State Microstructures and School of Physics, Nanjing University（南京大学固体微结构物理国家重点实验室和物理学院）
• Department of Physics and State Key Laboratory of Optical Quantum Materials, The Hong Kong University of Science and Technology（香港科技大学物理系和光学量子材料国家重点实验室）
• Collaborative Innovation Center of Advanced Microstructures, Nanjing University（南京大学先进微结构协同创新中心）
• Collaborative Innovation Center of Extreme Optics, Shanxi University（山西大学极端光学协同创新中心）
• Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics, Nanjing University（南京大学固态照明与节能电子协同创新中心）

机构由 AI 辅助整理，请以论文原文为准。