Electrically programmable solid-state metasurfaces via flash localised heating
作者机构：ARC Centre of Excellence for Transformative Meta-Optical Systems(TMOS)Research School of PhysicsThe Australian National UniversityCanberraACT 2601Australia Advanced Optics and Photonics LaboratoryDepartment of EngineeringSchool of Science and TechnologyNottingham Trent UniversityNottinghamNG118NSUK School of Engineering and Information TechnologyUniversity of New South WalesCanberraACT 2600Australia
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2023年第12卷第3期
页 面：391-397页
核心收录：
学科分类：070207[理学-光学] 07[理学] 08[工学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 0803[工学-光学工程] 0702[理学-物理学]
基 金：The Royal Society and the Wolfson Foundation(RSWF\FT\191022) as well as the Australian Research Council through TMOS Centre of Excellence(CE20010001) and Discovery Project(DP200101353)
摘 要：In the last decades,metasurfaces have attracted much attention because of their extraordinary light-scattering ***,their inherently static geometry is an obstacle to many applications where dynamic tunability in their optical behaviour is ***,there is a quest to enable dynamic tuning of metasurface properties,particularly with fast tuning rate,large modulation by small electrical signals,solid state and programmable across multiple ***,we demonstrate electrically tunable metasurfaces driven by thermo-optic effect and flash-heating in *** show a 9-fold change in transmission by5 V biasing voltage and the modulation rise-time of625µ*** device consists of a silicon hole array metasurface encapsulated by transparent conducting oxide as a localised *** allows for video frame rate optical switching over multiple pixels that can be electrically *** of the advantages of the proposed tuning method compared with other methods are the possibility to apply it for modulation in the visible and near-infrared region,large modulation depth,working at transmission regime,exhibiting low optical loss,low input voltage requirement,and operating with higher than video-rate switching *** device is furthermore compatible with modern electronic display technologies and could be ideal for personal electronic devices such as flat displays,virtual reality holography and light detection and ranging,where fast,solid-state and transparent optical switches are required.
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