基于电可调谐超透镜的快速偏振控制深度传感与成像

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-06-02 DOI:10.1021/acs.nanolett.5c01831

Yeseul Kim, Jihae Lee, Wei-Hong Yeo, Xiaotong Li, Won-Sik Kim, Young-Ki Kim, Trevon Badloe, Cheng Sun, Hao F. Zhang, Junsuk Rho

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引用次数: 0

摘要

我们展示了一种电可调谐的超构透镜，它将氢化非晶硅（a- si:H）元原子与液晶（LC）层结合在一起，用于快速偏振控制深度传感和成像。左圆偏振光（LCP）和右圆偏振光（RCP）的两个独立聚焦轮廓通过在单个超表面上的传播和几何相位进行编码。调整LC电压和LCP、RCP之间的入射偏振，以及它们的叠加，可以实现毫秒级的重构。在纯圆偏振下，超透镜产生单个高保真焦斑或图像。线偏振光产生两个旋转图像，其相对方向编码物体深度。实验匹配理论，并确认在焦点扫描图像的全π旋转。该设备为显微镜、全息术和自适应光学中的成像和深度传感提供了一个紧凑的实时平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Rapid Polarization-Controlled Depth Sensing and Imaging with an Electrically Tunable Metalens

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Rapid Polarization-Controlled Depth Sensing and Imaging with an Electrically Tunable Metalens

We demonstrate an electrically tunable metalens that combines hydrogenated amorphous silicon (a-Si:H) meta-atoms with a liquid crystal (LC) layer for rapid polarization-controlled depth sensing and imaging. Two independent focusing profiles for left-circularly polarized (LCP) light and right-circularly polarized (RCP) light are encoded via propagation and geometric phases in a single metasurface. Adjusting the LC voltage and the incident polarization among the LCP, RCP, and their superposition enables millisecond-scale reconfiguration. Under pure circular polarization, the metalens yields a single high-fidelity focal spot or an image. Linearly polarized light produces two rotating images, whose relative orientation encodes object depth. Experiments match theory and confirm a full π rotation of the image during focal scanning. The device offers a compact, real-time platform for imaging and depth sensing in microscopy, holography, and adaptive optics.

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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.