论文标题
活跃的钙钛矿双曲线元表面
Active Perovskite Hyperbolic Metasurface
论文作者
论文摘要
一类特殊的各向异性培养基，双曲线超材料和跨境（HMMS）近年来引起了很多关注，因为它在亚波长度上操纵和工程电磁波的独特能力。由于所有HMM设计都需要金属介电复合材料，因此在光频率下不可避免的金属损耗启发了主动HMM的发展，其中加入了增益材料以补偿金属损失。在这里，我们在实验上展示了一个有源II型HMM，该HMM在硅平台上的750 nm附近的真空波长下运行。与以前在1μm以下工作的活性HMM不同，我们的HMM中的介电成分仅由增益培养基组成，它通过利用溶液加工和可调的金属卤化物钙钛矿增益。由于我们的活动性HMM的便捷制造，可调节性和硅兼容性，这项工作为HMM集成到ON芯片组件上，并最终进入光子集成电路。
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 μm, 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.
