Anisotropy and Modal Hybridization in Infrared Nanophotonics Using Low-Symmetry Materials
Anisotropy and Modal Hybridization in Infrared Nanophotonics Using Low-Symmetry Materials
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DOI：
10.1021/acsphotonics.1c01486
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发表时间：
2022-03
期刊：
影响因子：
7
通讯作者：
Mingze He;T. Folland;J. Duan;P. Alonso‐González;S. De Liberato;A. Paarmann;J. Caldwell
中科院分区：
文献类型：
--
作者：
Mingze He;T. Folland;J. Duan;P. Alonso‐González;S. De Liberato;A. Paarmann;J. Caldwell
各向异性是几百年来光学元件设计中采用的关键特性。然而，近年来，人们对各向异性（低晶体对称性）材料中支持的极化激元越来越感兴趣，因为它们能够将光压缩到更小的深亚波长尺寸。虽然历史上第一个探测到的各向异性极化激元是双曲线模式，但对各向异性材料的研究最近转向了混合材料和光学模式，采用声子限制，极化激元强耦合和莫尔结构等现象来设计光学特性。在这一观点中，我们将简要介绍极化激元各向异性的物理和理论，回顾最近研究的各向异性和二维材料，然后讨论实现混合模式和识别新材料的方法。基于过去几年的结果，我们扩展了这些讨论，以突出的挑战，并概述了我们认为有前途的路径，以进一步探索未来纳米光子光学器件中极化激元各向异性和混合系统的潜力
: Anisotropy has been a key property employed in the design of optical components for hundreds of years. However, in recent years there has been growing interest into polaritons supported within anisotropic (low crystal symmetry) materials for their ability to compress light to smaller, deeply sub-wavelength dimensions. While historically the first anisotropic polaritons probed were hyperbolic modes, research into anisotropic materials has recently turned towards hybrid materials and optical modes, employing phenomena such as phonon confinement, polaritonic strong coupling, and Moiré structures to design the optical properties. In this Perspective, we will briefly introduce the physics and theories of polariton anisotropy, review recently investigated anisotropic and two-dimensional materials, and then move on to a discussion of approaches towards realizing hybrid modes and identifying new materials. Based on the results from the past few years, we extend these discussions to highlight outstanding challenges and outline what we perceive as promising paths to further explore the potential for polariton anisotropy and hybrid systems in future nanophotonic optical devices