Full-Color Quasi-Achromatic Imaging with a Dual-Functional Metasurface

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-18 DOI:10.1021/acs.nanolett.5c00695

Xiaomin Du, Wenjing Shen, Jian Li, Yanhao Chu, Jiacheng Sun, Junyi Wang, Jitao Ji, Chen Chen, Shining Zhu, Tao Li

引用次数: 0

Abstract

Achieving broadband achromaticity in the visible spectrum is critical for enhancing the imaging performance of metalenses. However, many previous studies remain constrained by small device sizes or small numerical aperture. In this study, we propose a polarization-multiplexed metalens capable of generating zero- and high-order Bessel beams to achieve quasi-achromatic correction without size limitations. An image subtraction method with the two polarization channels is developed to mitigate the Bessel beam sidelobes to improve imaging quality. Our results demonstrate an effective quasi-achromatic focusing and imaging over a continuous wavelength range of 450–700 nm with long focus depth. The image subtraction method significantly enhances the image clarity and contrast, providing new insights for full-color imaging and detection.

Abstract Image

查看原文本刊更多论文

具有双功能超表面的全彩准消色差成像

在可见光谱中实现宽带消色度是提高超透镜成像性能的关键。然而，许多先前的研究仍然受到小器件尺寸或小数值孔径的限制。在这项研究中，我们提出了一种能够产生零阶和高阶贝塞尔光束的偏振复用超透镜，以实现无尺寸限制的准消色差校正。提出了一种双偏振通道图像减法方法，以减轻贝塞尔光束旁瓣，提高成像质量。我们的研究结果证明了一种有效的准消色差聚焦和成像，在450-700 nm的连续波长范围内具有长聚焦深度。图像减法方法显著提高了图像的清晰度和对比度，为全彩成像和检测提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.