Resonance Wavelength Stabilization of Quasi-Bound States in the Continuum Constructed by Symmetry Breaking and Area Compensation.

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-06 DOI:10.1021/acs.nanolett.4c04217

Shaojun You, Haoxuan He, Ying Zhang, Hong Duan, Lulu Wang, Yiyuan Wang, Shengyun Luo, Chaobiao Zhou

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Abstract

Dielectric metasurface supported symmetry-protected bound states in the continuum (SP-BIC) provide an important platform for enhancing light-matter interactions. However, the conversion of SP-BIC into quasi-BIC (QBICs) through symmetry breaking is often accompanied by a shift in the resonance wavelength. In this work, we present a generalized viewpoint aimed at achieving the wavelength stability of QBICs through symmetry breaking and area compensation (SBAC). Three SBAC schemes we propose are equal proportional compensation along both x- and y-directions and equal proportional compensation along x-direction only or y-direction only. The QBICs resonance wavelengths stabilized at about 1200, 1520, and 1434 nm are achieved in monomer, dimer, and tetramer metasurfaces, respectively. Finally, we perform an experimental demonstration in a nanohole dimer photonic crystal slab. The QBICs resonance wavelength stabilized at 1658 nm for SBAC. Our approach provides new routes for realizing QBICs with a stable wavelength and tunable Q-factor.

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通过对称性破坏和面积补偿构建的连续体中准束缚态的共振波长稳定。

介质元表面支持的连续体对称保护束缚态（SP-BIC）为增强光物质相互作用提供了一个重要平台。然而，通过对称性破缺将 SP-BIC 转换为准 BIC（QBIC）往往会伴随着共振波长的移动。在这项工作中，我们提出了一种通用观点，旨在通过对称性破缺和面积补偿（SBAC）实现 QBIC 的波长稳定性。我们提出了三种 SBAC 方案，即沿 x 和 y 方向的等比例补偿，以及仅沿 x 方向或仅沿 y 方向的等比例补偿。在单体、二聚体和四聚体元表面中，QBIC 的共振波长分别稳定在 1200、1520 和 1434 nm 左右。最后，我们在纳米孔二聚体光子晶体板中进行了实验演示。在 SBAC 中，QBIC 的共振波长稳定在 1658 nm。我们的方法为实现具有稳定波长和可调 Q 因子的 QBIC 提供了新的途径。

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.