可形变光学超构表面及其动态调控

Deformable optical metasurfaces with dynamic reconfiguration

经过近10年的发展,超构表面作为一种新型的二维人工微纳结构,在光场特性调控方面展现出了巨大的研究潜力。但要实现小型化、集成化的超构表面光电子器件,还需要进一步发展具备动态调控功能的光学超构表面。本文综述了近年来发展的可形变超构表面的研究进展,简要概述了以纳米剪纸技术为基础的可形变超构表面的设计和实现方法,并重点介绍了其在相位、偏振、光学手性、非线性辐射等方面优异的调控性能及其应用。这种灵活的、易实现的可形变超构表面在光场动态调控方面具有独特优势,为设计和实现新型微纳光电子器件提供了新的策略,有望推动新兴的应变光电子学的发展。

As one type of novel two-dimensional artificial micro-nano structure,metasurfaces have exhibited strong potential for application in light manipulation in recent decades.However,there is a substantial calling for next-generation optical metasurfaces endowed with remarkable reconfiguration capabilities for practical applications in increasingly miniaturized and integrated opto-electronic devices.In this paper,we review the recent progress of deformable optical metasurfaces mainly fabricated by focused-ion-beam-based nano-kirigami and focus on their excellent performance and applications in the active control of phase,polarization,optical chirality,nonlinear radiation,etc.Deformable metasurfaces with their exceptional flexibility and reconfigurability provide a novel and feasible strategy for the design of functional micro-nano-optoelectronic devices,and immensely promote the development of emerging strainoptronics.