难熔等离子体钼超表面非线性光学区的工程圆二色性

IF 15.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Nano Pub Date : 2025-05-17 DOI:10.1021/acsnano.5c05694

Peng Yu, Tianji Liu, Yuxuan Zhu, Feng Lin, Shuai Yue, Junichi Takahara, Tao Ding, Hongxing Xu, Alexander O. Govorov, Zhiming M. Wang

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引用次数: 0

摘要

手性等离子体超表面具有圆二色性，是研究手性光学的重要工具。然而，在线性光学系统中，CD值是固定的。此外，传统的手性等离子体超表面光热稳定性差，使其非线性光学性质难以激发。本文提出了一种难熔等离子体钼（Mo）超表面，它不仅在极端条件下保持强热效应，承受高达1100℃的温度和超过12 GW/cm2的激光强度，而且由于手性饱和吸收和手性反饱和吸收，在非线性光学区实现了强度依赖的可调谐CD。此外，我们的超表面表现出巨大的三次谐波产生。最后，我们展示了基于这种难熔的手性Mo超表面的概念验证圆偏振光限制器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Engineering Circular Dichroism in the Nonlinear Optical Region with a Refractory Plasmonic Molybdenum Metasurface$

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Engineering Circular Dichroism in the Nonlinear Optical Region with a Refractory Plasmonic Molybdenum Metasurface

Chiral plasmonic metasurfaces exhibit circular dichroism (CD) and serve as a key tool for chiroptics. However, in the linear optical regime, the CD value remains fixed. Moreover, conventional chiral plasmonic metasurfaces suffer from poor photothermal stability, making it difficult to excite their nonlinear optical properties. Here, we present a refractory plasmonic molybdenum (Mo) metasurface that not only maintains strong chiroptical effects under extreme conditions, withstanding temperatures up to 1100 °C and laser intensities exceeding 12 GW/cm², but also realizes intensity-dependent tunable CD in the nonlinear optical region due to chiral saturated absorption and chiral reverse saturable absorption. In addition, our metasurface exhibits giant third-harmonic generation. Finally, we demonstrate a proof-of-concept circularly polarized light limiter based on this refractory chiral Mo metasurface.

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来源期刊

ACS Nano 工程技术-材料科学：综合

CiteScore

26.00

自引率

4.10%

发文量

1627

审稿时长

1.7 months

期刊介绍： ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.