A special class of anisotropic media, hyperbolic metamaterials and metasurfaces (HMMs), has attracted much attention in recent years due to its unique ability to manipulate and engineer electromagnetic waves on the subwavelength scale. Because all HMM designs require metal–dielectric composites, the unavoidable metal loss at optical frequencies inspired the development of active HMMs, wherein a gain material is incorporated to compensate for the metal loss. Here, we experimentally demonstrate a luminescent active HMM on silicon that operates at near 750 nm, in which the dielectric constituent is composed entirely of a solution-processed metal-halide perovskite gain. We show the extreme anisotropy of the HMM with microphotoluminescence measurements through the observation of high degrees of linear polarization that are greater than 0.8 in both the emission and absorption. Thanks to the facile fabrication, wide-wavelength tunability, and silicon compatibility for our active HMM, this work paves the way toward HMM’s integration into on-chip components and, eventually, photonic integrated circuits.

中文翻译：

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活性钙钛矿双曲面超曲面

近年来，一类特殊的各向异性介质，即双曲超材料和超表面（HMM），由于其在亚波长范围内操纵和制造电磁波的独特能力而备受关注。由于所有HMM设计都需要金属-电介质复合材料，因此不可避免的在光频率下的金属损耗激发了有源HMM的发展，其中加入了增益材料以补偿金属损耗。在这里，我们实验证明了在750 nm附近工作的硅上的发光活性HMM，其中介电成分完全由溶液处理的金属卤化物钙钛矿增益组成。我们通过观察大于0的高度线性极化，通过微光致发光测量显示了HMM的极端各向异性。8在发射和吸收上。由于有源HMM的制造简便，宽波长可调谐性以及与硅的兼容性，这项工作为HMM集成到片上组件以及最终集成到光子集成电路铺平了道路。