Active Perovskite Hyperbolic Metasurface
Active Perovskite Hyperbolic Metasurface
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DOI：
10.1021/acsphotonics.0c00391
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发表时间：
2020-02
期刊：
影响因子：
7
通讯作者：
Zhitong Li;J. Smalley;R. Haroldson;Dayang Lin;R. Hawkins;Abouzar Gharajeh;Jiyoung Moon;Junpeng Hou;Chuanwei Zhang;Walter Hu;A. Zakhidov;Q. Gu
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文献类型：
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作者：
Zhitong Li;J. Smalley;R. Haroldson;Dayang Lin;R. Hawkins;Abouzar Gharajeh;Jiyoung Moon;Junpeng Hou;Chuanwei Zhang;Walter Hu;A. Zakhidov;Q. Gu
双曲型超材料和超表面是一类特殊的各向异性介质，由于其在亚波长尺度上操纵和设计电磁波的独特能力，近年来引起了人们的广泛关注。由于所有HMM设计都需要金属介电复合材料，因此光频率下不可避免的金属损耗激发了有源阻尼器的发展，其中加入增益材料以补偿金属损耗。在这里，我们实验证明了一个积极的II型隐马尔可夫模型，工作在真空波长接近750 nm的硅平台上。不同于以前的有源HNMR工作在1 {\mu}m以下，在我们的HMM的介电成分是唯一的增益介质组成，通过利用溶液处理和广泛可调的金属卤化物钙钛矿增益。由于我们的有源HMM易于制造，可调谐性和硅兼容性，这项工作为HMM集成到片上组件，并最终集成到光子集成电路中铺平了道路。
A special class of anisotropic media, hyperbolic metamaterials and metasurfaces (HMMs), has attracted much attention in recent years due to its unique abilities 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, where gain materials is incorporated to compensate the metal loss. Here, we experimentally demonstrate an active type II HMM that operates at vacuum wavelength near 750 nm on a silicon platform. Different from previous active HMMs operating below 1 {\mu}m, the dielectric constituent in our HMM is solely composed of gain medium, by utilizing solution processed and widely tunable metal halide perovskite gain. Thanks to the facile fabrication, tunability and silicon compatibility of our active HMM, this work paves the way towards HMM's integration into on chip components, and eventually, into photonic integrated circuits.