arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2405.01034physics.opticsphysics.app-phphysics.comp-ph
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有限尺寸光子超结构中高Q值共振的集体本质

Collective nature of high-Q resonances in finite-size photonic metastructures

Thanh Xuan Hoang, Daniel Leykam, Hong-Son Chu, Ching Eng Png, Francisco J. Garcıa-Vidal, Yuri S. Kivshar

AI总结:

该研究从布洛赫波与多重散射理论出发,揭示有限米氏谐振器阵列中最高Q共振源于光锥以下集体成键模式而非连续域束缚态,并指出高Q微腔耦合未必增强光-物质相互作用,为谐振超器件设计提供新见解。

摘要:

我们从布洛赫波理论和多重散射理论两个视角,研究了由米氏谐振器构成的周期性阵列所支持的高品质因子(高Q)共振。我们揭示,与普遍认知不同,由布洛赫波理论导出的连续域束缚态(BICs)并不能直接决定大型但有限阵列中Q值最高的共振。更高的Q因子似乎与集体共振相关,这些集体共振由光锥以下的名义导模形成,并伴随电多极子和磁多极子的强效应。我们的发现为通过有限超结构中的成键模式获取更高Q共振的模式提供了有价值的见解。我们的结果强调了磁多极子和电多极子在谐振超器件与非局域平带光学设计中的关键意义。此外,我们的演示表明,与耦合的低Q纳米谐振器相比,高Q微腔的耦合阵列并不会固有地产生更强的光-物质相互作用。这一结果凸显了在基于腔的系统中研究多重光散射效应的至关重要性。

英文摘要:

We study high quality-factor (high Q) resonances supported by periodic arrays of Mie resonators from the perspectives of both Bloch wave theory and multiple scattering theory. We reveal that, unlike a common belief, the bound states in the continuum (BICs) derived by the Bloch-wave theory do not directly determine the resonance with the highest Q value in large but finite arrays. Higher Q factors appear to be associated with collective resonances formed by nominally guided modes below the light line associated with strong effect of both electric and magnetic multipoles. Our findings offer valuable insights into accessing the modes with higher Q resonances via bonding modes within finite metastructures. Our results underpin the pivotal significance of magnetic and electric multipoles in the design of resonant metadevices and nonlocal flat-band optics. Moreover, our demonstrations reveal that coupled arrays of high-Q microcavities do not inherently result in a stronger light-matter interaction when compared to coupled low-Q nanoresonators. This result emphasizes the critical importance of the study of multiple light-scattering effects in cavity-based systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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