Collective Coupling of 3D Confined Optical Modes in Monolithic Twin Microtube Cavities Formed by Nanomembrane Origami,Nano Letters

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Collective Coupling of 3D Confined Optical Modes in Monolithic Twin Microtube Cavities Formed by Nanomembrane Origami
Nano Letters ( IF 9.6 ) Pub Date : 2022-08-08 , DOI: 10.1021/acs.nanolett.2c02083
Xiaoyu Wang _{1,

2} , Zhen Wang ₃ , Haiyun Dong ₁ , Christian Niclaas Saggau ₁ , Hongmei Tang _{1,

4,

5} , Min Tang ₁ , Lixiang Liu ₁ , Stefan Baunack ₁ , Ling Bai ₆ , Junlin Liu ₆ , Yin Yin ₆ , Libo Ma ₁ , Oliver G Schmidt _{2,

4,

5}

Affiliation

We report the monolithic fabrication of twin microtube cavities by a nanomembrane origami method for achieving collective coupling of 3D confined optical modes. Owing to the well-aligned twin geometries, two sets of 3D confined optical modes in twin microtubes are spectrally and spatially matched, by which both the fundamental and higher-order axial modes are respectively coupled with each other. Multiple groups of the coupling modes provide multiple effective channels for energy exchange between coupled microcavities illustrated by the measured spatial optical field distributions. The spectral anticrossing and changing-over features of each group of coupled modes are revealed in experiments and calculations, indicating the occurrence of strong coupling. In addition, the simulated 3D mode profiles of twin microcavities confirm the collective strong coupling behavior, which shows good agreement with experiments. The collective coupling of 3D confined resonant modes promises broad applications in multichannel optical signal processing, nanophotonics, and 3D non-Hermitian systems.

中文翻译：

纳米膜折纸形成的单片双微管腔中 3D 受限光学模式的集体耦合

我们报告了通过纳米膜折纸方法单片制造双微管腔，以实现 3D 受限光学模式的集体耦合。由于双胞胎几何结构良好对齐，双胞胎微管中的两组 3D 受限光学模式在光谱和空间上是匹配的，基模和高阶轴向模式分别相互耦合。多组耦合模式为耦合微腔之间的能量交换提供了多个有效通道，由测量的空间光场分布说明。在实验和计算中揭示了每组耦合模式的光谱反交叉和转换特征，表明发生了强耦合。此外，双微腔的模拟 3D 模式剖面证实了集体强耦合行为，这与实验有很好的一致性。3D 受限谐振模式的集体耦合有望在多通道光信号处理、纳米光子学和 3D 非厄米系统中得到广泛应用。

更新日期：2022-08-08

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