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Surface Plasmon Polariton Mediated Multiple Toroidal Resonances in 3D Folding Metamaterials
ACS Photonics ( IF 6.5 ) Pub Date : 2017-11-02 00:00:00 , DOI: 10.1021/acsphotonics.7b00529 Shengyan Yang 1, 2 , Zhe Liu 1 , Ling Jin 1 , Wuxia Li 1 , Shuang Zhang 3 , Junjie Li 1, 2 , Changzhi Gu 1, 2, 4
ACS Photonics ( IF 6.5 ) Pub Date : 2017-11-02 00:00:00 , DOI: 10.1021/acsphotonics.7b00529 Shengyan Yang 1, 2 , Zhe Liu 1 , Ling Jin 1 , Wuxia Li 1 , Shuang Zhang 3 , Junjie Li 1, 2 , Changzhi Gu 1, 2, 4
Affiliation
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Toroidal dipole has attracted tremendous attentions in nuclear, particle, condensed matter and material physics due to its exotic characteristics that are distinct from the fundamental electric and magnetic dipoles. Due to the very weak intensity, toroidal dipolar response is extremely difficult to be detected in natural materials. Although single dynamic toroidal dipole has recently been observed in metamaterials, simultaneous observation of multiple toroidal dipole resonances is still very challenging, and many intriguing physical phenomena associated with them have remained elusive. Here we experimentally demonstrate an approach to achieving toroidal dipole responses with high quality factors in the infrared region via surface-plasmon-polariton excitation. Implementation of this concept leads to simultaneous experimental observation of double toroidal modes in 3D metamaterial. Periodicity and angle dependent transmission measurements clearly reveal the coupling between the surface-plasmon-polariton mode and toroidal modes. Our demonstration provides a unique platform for the study of toroidal electrodynamics and various astonishing optical phenomena involving toroidal moments.
中文翻译：
表面等离子体激元介导的3D折叠超材料中的多个环形共振。
环形偶极子由于其与基本的电偶极子和磁偶极子不同的奇异特性而在核，粒子，凝聚态和材料物理领域引起了极大的关注。由于强度非常弱，因此在天然材料中极难检测到环形偶极响应。尽管最近已在超材料中观察到单个动态环形偶极子，但同时观察多个环形偶极子共振仍然非常具有挑战性，与它们相关的许多有趣的物理现象仍然难以捉摸。在这里，我们通过实验证明了一种通过表面等离子体激元极化激发在红外区域中以高质量因子实现环形偶极子响应的方法。该概念的实现导致在3D超材料中同时进行双环形模态的实验观察。周期性和与角度有关的透射测量清楚地揭示了表面等离激元极化模和环形模之间的耦合。我们的演示为研究环形电动力学和涉及环形矩的各种惊人的光学现象提供了一个独特的平台。
更新日期：2017-11-03
中文翻译：
表面等离子体激元介导的3D折叠超材料中的多个环形共振。
环形偶极子由于其与基本的电偶极子和磁偶极子不同的奇异特性而在核，粒子，凝聚态和材料物理领域引起了极大的关注。由于强度非常弱，因此在天然材料中极难检测到环形偶极响应。尽管最近已在超材料中观察到单个动态环形偶极子，但同时观察多个环形偶极子共振仍然非常具有挑战性，与它们相关的许多有趣的物理现象仍然难以捉摸。在这里，我们通过实验证明了一种通过表面等离子体激元极化激发在红外区域中以高质量因子实现环形偶极子响应的方法。该概念的实现导致在3D超材料中同时进行双环形模态的实验观察。周期性和与角度有关的透射测量清楚地揭示了表面等离激元极化模和环形模之间的耦合。我们的演示为研究环形电动力学和涉及环形矩的各种惊人的光学现象提供了一个独特的平台。
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