Bound states in the continuum in a chain of coupled Mie resonators with structural disorder: theory and experiment

IF 6.6 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2025-09-18 DOI:10.1515/nanoph-2025-0225

Ravshanjon Nazarov, Denis Khanabiev, Elizaveta Chernysheva, Alexandra Dudnikova, Vyacheslav Istomin, Mikhail Sidorenko, Jinhui Shi, Ekaterina Maslova, Andrey Bogdanov, Zarina Kondratenko (Sadrieva)

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引用次数: 0

Abstract

We study the impact of structural disorder on a radiative lifetime of symmetry-protected bound state in the continuum (BIC) and a bright mode in a one-dimensional periodic chain of coupled Mie resonators. Through experimental, simulation, and theoretical approach, we reveal an unusual linear decay in the radiative quality factor of the BIC with the increase of the disorder amplitude, contrasting with the quadratic decay observed in recent studies. We also investigate modes with different symmetries and show that the behavior of the quality factor in a strongly disordered system depends on the mode’s multipolar origin. In addition, we found that in a disordered finite chain, the quality factor of Fabry–Pérot modes is governed by intraband interactions of modes. To study the behavior of localized states in disordered systems, we also analyze the emergence of Anderson localization. Our findings are pivotal for the practical application of BICs, particularly in natural and self-assembled photonic structures where structural disorder plays a crucial role.

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结构无序耦合Mie谐振链中连续统的束缚态：理论与实验

研究了结构失序对连续介质中对称保护束缚态的辐射寿命和一维耦合Mie谐振器周期链中的亮模的影响。通过实验、模拟和理论分析，我们发现BIC的辐射质量因子随无序幅值的增加呈线性衰减，而不是以往研究中观察到的二次衰减。我们还研究了具有不同对称性的模态，并表明在强无序系统中质量因子的行为取决于模态的多极起源。此外，我们发现在无序有限链中，法布里-帕姆罗特模式的质量因子受模式带内相互作用的支配。为了研究无序系统中局域态的行为，我们还分析了Anderson局域化的出现。我们的发现对于bic的实际应用至关重要，特别是在结构无序起关键作用的自然和自组装光子结构中。

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

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.