拓扑暗度辅助的原子薄超光学系统相位调节
Topological-darkness-assisted phase regulation for atomically thin meta-optics
摘要：
二维（2D）贵金属二硫属化物已经成为一个新的平台，实现了相当程度的小型化的多功能平面光学。然而，原子尺度的光场操纵被广泛认为是不可实现的，因为2D材料的消失厚度和固有损耗完全抑制了共振和相位累积效应。授权传统感知的本征损耗的不利影响，我们表明，结构化的PtSe 2薄膜集成了一个均匀的衬底可以调节非平凡的奇异相位和实现原子厚的超光学拓扑黑暗的存在下。我们实验证明了一系列的原子厚的二元元光学，允许角度稳健和高单位厚度衍射效率为0.96%/nm的可见光频率，鉴于其厚度仅为4.3 nm。我们的研究结果揭示了一类新的二维平面光学在原子厚度的光场操纵的潜力。
英文摘要：
Two-dimensional (2D) noble-metal dichalcogenides have emerged as a new platform for the realization of versatile flat optics with a considerable degree of miniaturization. However, light field manipulation at the atomic scale is widely considered unattainable since the vanishing thickness and intrinsic losses of 2D materials completely suppress both resonances and phase accumulation effects. Empowered by conventionally perceived adverse effects of intrinsic losses, we show that the structured PtSe2 films integrated with a uniform substrate can regulate nontrivial singular phase and realize atomic-thick meta-optics in the presence of topological darkness. We experimentally demonstrate a series of atomic-thick binary meta-optics that allows angle-robust and high unit-thickness diffraction efficiency of 0.96%/nm in visible frequencies, given its thickness of merely 4.3 nm. Our results unlock the potential of a new class of 2D flat optics for light field manipulation at an atomic thickness.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
