Dielectric Metalens Array for Simultaneous Polarization and Wavefront Mapping in the Visible Spectrum

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-06-25 DOI:10.1021/acs.nanolett.5c02300

Ling Li, Meiyan Pan*, Jian Zhang, Yuting Jiang, Shuai Wang*, Ping Yang, Yujia Zang, Huigao Duan and Yueqiang Hu*,

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引用次数: 0

Abstract

While traditional polarimetry effectively analyzes polarization states with bulky systems, recent advances have enabled metasurfaces to serve as compact alternatives. Metalens arrays have enabled full-polarization and phase profile determination. However, enhancing their efficiency and spatial resolution remains constrained in submetalens architectures. Here, we develop a shared-aperture TiO₂ metalens array that concurrently focuses six polarization components into a hexagonal lattice configuration. Through single-frame focal field analysis, the system enables comprehensive Stokes parameter reconstruction (4.64% deviation) and phase gradient quantification (1.75 rad/μm maximum). The architecture exhibits minimized cross-talk, permitting accurate characterization of complex vector beams─including radially/azimuthally polarized vortices and diverging wavefronts─with strong agreement to theoretical predictions. This integrated platform presents a promising avenue for applications requiring simultaneous polarization-state analysis, adaptive wavefront control, and quantum optical characterization in space-constrained environments.

Abstract Image

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可见光谱中同时偏振和波前映射的介电超透镜阵列。

虽然传统的偏振法可以有效地分析大体积系统的偏振态，但最近的进展使得超表面可以作为紧凑的替代品。超透镜阵列实现了全极化和相位轮廓的确定。然而，提高它们的效率和空间分辨率在亚超构结构中仍然受到限制。在这里，我们开发了一个共享孔径的TiO2超构透镜阵列，可以同时将六个偏振分量聚焦成六边形晶格结构。通过单帧焦场分析，系统实现了全面的Stokes参数重建（偏差4.64%）和相位梯度量化（最大1.75 rad/μm）。该结构显示出最小的串扰，允许精确表征复杂矢量光束──包括径向/方位角极化涡流和发散波前──与理论预测非常吻合。该集成平台为需要在空间受限环境中同时进行偏振态分析、自适应波前控制和量子光学表征的应用提供了一条有前途的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.