论文标题
超薄可调的光学机械金属
Ultra-thin Tunable Optomechanical Metalens
论文作者
论文摘要
可重新配置的元信息提供了巨大的承诺，可以通过将集成与改善功能相结合来增强光子技术。最近，通过修改元原子本身或其周围周围的电介电常数，可以实现其他静态跨空面的可重构性。然而，实现重要而快速的可调性而不会增加散装性仍然是一项挑战。在这里，我们展示了一种超薄可调金属，可以通过中等连续波强度通过光学机械控制来改变焦距。随着响应时间为10 $μ$ S，我们实现了超过5％的快速焦距变化
Reconfigurable metasurfaces offer great promises to enhance photonics technology by combining integration with improved functionalities. Recently, reconfigurability in otherwise static metasurfaces has been achieved by modifying the electric permittivity of the meta-atoms themselves or their immediate surrounding. Yet, it remains challenging to achieve significant and fast tunability without increasing bulkiness. Here, we demonstrate an ultra-thin tunable metalens whose focal distance can be changed through optomechanical control with moderate continuous wave intensities. We achieve fast focal length changes of more than 5% with response time of the order of 10$μ$s
