Active Dielectric Metasurface Based On Phase‐change Medium

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Vol. 10 November 2016 LASER &PHOTONICS REVIEWS

Active dielectric metasurface based on phase-change medium Cheng Hung Chu, Ming Lun Tseng, Jie Chen, Pin Chieh Wu, Yi-Hao Chen, Hsiang-Chu Wang, Ting-Yu Chen, Wen Ting Hsieh, Hui Jun Wu, Greg Sun and Din Ping Tsai LASER &PHOTONICS REVIEWS Vol. 10 November 2016 www.lpr-journal.org

Demonstration of color display metasurfaces via immersion

Both metal [3 10] and dielectric materials [11 13,16 21] were used to form the metasurfaces. The dielectric materials based metasurfaces outperform due to the ease for process integration and the higher transmission efficiency. Remarkable progresses have been made in demonstration of flat optic components by dielectric metasurfaces,

ICMAT 2019 POSTER BOARD ALLOCATION - THURSDAY, 27 JUNE 2019

039 Thu 191811 Sym D-09 Poster Session Reflective Spatial Light Modulators with Sub-Wavelength-Resolution based on Active Metasurfaces 040 Thu 191842 Sym D-09 Poster Session Hybrid Metal-Dielectric Nanoantennas for Out-of-Plane Fluorescence Enhancement 041 Thu 191942 Sym D-09 Poster Session Optical Modulation in Chains of Silicon Nanoantennas

Supporting Information - pubs.acs.org

S5. Effective medium approximation Figure S5. Measured dielectric permittivity of a VO 2 thin film on a sapphire substrate at RT and 90 ℃, which clearly indicates the phase transition. The real part of the dielectric permittivity of VO 2 (solid line) changes its sign from positive to negative upon phase transition.

tunable phase change material Ultra-thin perfect absorber

wave encounters medium q from medium p, ~n p ¼ p þik p is the complex refractive index of medium p, b ¼ 2p k 0 n~ 2h, r 0 ¼r 12, and m t 12 23 m 21 ðm t1Þ 21e 2mib for m > 0. When k 2 n 2, Eq. (1) describes the reflection proper-losses. On resonance, light is stored for many optical cycles and can be gradually absorbed as it circulates

Sub-wavelength InAs quantum dot micro-disk lasers epitaxially

All-dielectric phase-change reconfigurable metasurface Applied Physics Letters 109 , 051103 (2016); 10.1063/1.4959272 Sub-wavelength InAs quantum dot micro-disk lasers epitaxially

Manipulation of vector beam polarization with geometric

based on period coupling Active dielectric metasurface based on phase-change medium, Laser Photonics Rev. E. Hasman, and M. L. Brongersma, Dielectric

TOPICAL REVIEW 5HVRQDQWGLHOHFWULFPHWDVXUIDFHV DFWLYHWXQLQJ

May 01, 2020 to resonant dielectric metasurfaces, the current state-of-the-art regarding the enhancement and tailoring of nonlinear frequency conversion processes using such metasurfaces is discussed. Next, we review different approaches to realize tunable dielectric metasurfaces, including ultrafast all-optical switching of the metasurface response.

Broadband terahertz reflector based on dielectric metamaterials

Active metasurface for controlling reflection and absorption properties Minyeong Yoo and Sungjoon Lim-Recent citations Wideband polarization-insensitive dielectric switch for mid-infrared waves realized by phase change material Ge 3 Sb 2 Te 6 Apeng Chen and Zhengyong Song-Nanoscale, tunable, and highly sensitive biosensor utilizing hyperbolic

Cellular automata dynamics of nonlinear optical processes in

Gallium s phase-change nonlinearity was the basis of the original active plasmonics concept,51 whereby propagation of SPPs on a metal dielectric waveguide interface can be modulated with high contrast via induced changes in the optical properties of one of the two materials, occurring only within a few nanometers of the surface.

Enhanced Performance and Diffusion Robustness of Phase-Change

Feb 18, 2021 tunable metasurfaces and how to overcome it, thus helping phase-change-based metasurface tech-nology move a step closer towards the realization of real-world applications. Keywords: active metasurfaces; phase-change metasurfaces; hybrid dielectric/plasmonic metasur-faces; gold diffusion in phase-change materials 1. Introduction

Millivolt Modulation of Plasmonic Metasurface Optical

based on ionic conductance, and also at strikingly low (single-millivolt scale) voltages. A plasmonic metasurface with an electrically tunable optical response that operates at strikingly low modulation voltages is experimentally demon-strated. The fabricated metasurface shows up to 30% relative change in

A reconfigurable hyperbolic metamaterial perfect absorber

amorphous crystalline phase change, but also it is an active semiconductor that can convert the absorbed light energy into electron hole pairs,69 making the GST225 based HMMabsorber useful for photodetectors or photovoltaic cells. Another key advantage of the recon gurable HMM absorber is its non-

Lingling Huang, Shuang Zhang and Thomas Zentgraf* Metasurface

tional optics [10 13]. A wide range of applications based on plasmonic or dielectric metasurfaces have been pro-posed and demonstrated in wavefront engineering [16, 17], information processing [18, 19] and spin-controlled photonics [20 22]. One of the cutting-edge nanotechnologies combines holography with nanodevices [23, 24]. Such metasurface

Nonlinear Mid-infrared Metasurface based on a Phase-Change

The archetypal phase change alloy Ge 2Sb 2Te 5 (GST) has been widely used in active linear metasurfaces due to its dramatic optical property contrast between the amorphous and crystalline phases31-35. More recently, a new phase change material Ge 2Sb 2Se 4Te 1 (GSST), the

Optical Limiting Based on Huygens Metasurfaces

narrow transmission windows. We demonstrate that a metasurface-based architecture incorporating phase-change materials enables both high and broadband on-state transmission (−4.8 dB) while also providing a large turndown ratio (25.2 dB). Additionally, this design can be extended for broadband multiwavelength limiting

Reconfigurable ultraviolet and high‑energy visible dielectric

UV/HEV dielectric metasurface by hybridizing a transparent passive dielectric nanostructure with a chalcogenide that acts in this spectral range as a low-index phase-change medium. Chalcogenide semiconductor alloys are noted for presenting an assortment of compositionally variable properties, from infrared transparency and high optical nonlinearity

Adaptive Multiple-band Absorber Based on VO2 Metasurface

The rapid phase change behavior of VO 2 endows the VO 2 metasurface with the ability of switching on or off resonance.[24,25] Acknowledging its fascinating features, VO 2 designing an adaptive multiple-band absorber. In this paper, we first proposed VO 2 nanoparticles (NPs) metasurface to obtain thermal-induced plasmonic resonance in

Andrei Komar, Zheng Fang, Justus Bohn, Jürgen Sautter, Manuel

dielectric nanoresonators are embedded.21 This method was also employed to realize a dielectric metasurface lens with adjustable focal length.22 Tuning of a dielectric metasurface using the amorphous-crystalline transition in a chalcogenide phase-change material was also achieved.23 While all these methods can allow for large tuning ranges

Efficient visible light modulation based on electrically

A highly ecient tuning mechanism is immersing the metasurface in a birefringent liquid crystal (LC), whose refractive index can be electrically controlled. Here, an all-dielectric tunable metasurface is demonstrated based on this concept, operating at visible frequencies and based on TiO2 nanodisks embedded in a thin LC layer.

Dual-Tunable Polarization Insensitive Electromagnetically

There are many types of active or tunable materials in nature that have been incorporated into metamaterials, such as ferroelectrics,21 liquid crystals,22,23 semiconductors,24,25 two-dimensional materials,26 29 and phase change materi-als.30,31 Xiao et al. proposed a graphene-based metasur-face structure that exhibits a tunable EIT response under

Reconfigurable all-dielectric Fano metasurfaces for strong

universal design rules. Here, all-dielectric phase-change Fano metasurface gratings are proposed and studied to relieve such conventional drawbacks. We theoretically and experimentally demonstrated strong dynamic full-space (reflection and transmission) modulation of visible intensities based on Fano resonances in all-dielectric metasurface

Millivolt modulation of a plasmonic metasurface via ionic

current through flash gate stacks in which trapping/de-trapping phenomena occur,15 phase change between amorphous and crystalline phases,16 and nanoionic redox phenomena or electrochemical metallization.17 The particular mechanism which is utilized in this present work is based on the nanoionic redox phenomenon/electrochemical metallization.

Review Yuanhang Che, Xiaoting Wang, Qinghai Song, Yabei Zhu

control. Based on the problems mentioned previously, tunability and reconfigurability are significant factors for functional devices using active metasurfaces [14]. Onewayistoswitchtheactive materialsintodifferent states through various modulation mechanisms, which often means a changeable refractive index (dielectric constant).

Antireflection-assisted all-dielectric terahertz metamaterial

states at 2.32 THz.30 The phase-change property of VO 2 was utilized to achieve a switchable THz QWP with a transmis-sion of 59% at 0.468 THz.31 Reference 32 described a single-layer metasurface working as an HWP with a PCR over 90% and a transmission under 30% at 0.91 1.45THz. An all-dielectric gradient grating was proposed to realize

Metamaterials for Microwave Radomes and the Concept of a

ReviewArticle Metamaterials for Microwave Radomes and the Concept of a Metaradome: Review of the Literature E.ÖziG,1 A.V.Osipov,1 andT.F.Eibert2 1GermanAerospaceCenter(DLR),MicrowavesandRadarInstitute,Oberpfaffenhofen,Germany

arXiv:2102.11028v1 [physics.ins-det] 18 Feb 2021

ter design schemes such as Fabry-Perot interference-based or metasurface-based filters PCMs can provide an optically active medium to tune the passband center wavelength (CWL) through refractive index switching.8 11 PCMs undergo a phase transition through rapid localized melting and recrystallization,12 which

Phase-Change-Driven Dielectric-Plasmonic Transitions in

7 Phase-change materials have played a significant role in the evolution of active plasmonic 8 and photonic metamaterial technologies, delivering a variety of switchable, tunable, and 9 reconfigurable optical functionalities through hybridization with plasmonic metal 10 nanostructures2-8. Chalcogenides in particular, which can be electrically

Active dielectric metasurface based on phase‐change medium

active meta-devices with broader applications that cannot be achieved in their passive counterparts with permanent proper-ties once fabricated. Active dielectric metasurface based on phase-change medium Cheng Hung Chu1, Ming Lun Tseng 2, Jie Chen , Pin Chieh Wu1,2, Yi-Hao Chen2, Hsiang-Chu Wang1,2, Ting-Yu Chen 2, Wen Ting Hsieh , Hui Jun Wu2

Phase-change-driven dielectric-plasmonic transitions in

Phase-change-driven dielectric-plasmonic transitions in chalcogenide metasurfaces Behrad Gholipour1,2, Artemios Karvounis1,JunYin3,CesareSoci3,KevinF.MacDonald1 and Nikolay I. Zheludev1,3 Abstract Chalcogenides alloys based on group-16 chalcogen elements (sulfur, selenium, and tellurium) covalently bound to

All-dielectric phase-change reconfigurable metasurface

dielectric metamaterials, presenting resonances based upon the excitation of Mie as opposed to plasmonic (displacement as opposed to conduction current) modes in high-index, low-loss dielectric as opposed to noble metal nanostructures. A wide range of passive all-dielectric metasurface planar optical elements for steering, splitting,

Phase Modulation with Electrically Tunable Vanadium Dioxide

integrate this active material into an otherwise passive metasurface structure and study the dynamically tunable optical response of the metasurface. Vanadium dioxide is a well-known phase change material, which undergoes a reversible insulator-to-metal transition upon heating.53 The phase transition of VO 2 is accompanied by a large change in

All-dielectric phase-change reconfigurable metasurface

wavelengths.13-17 Active functionalities have been demonstrated on the basis of hybridization of a silicon metasurface with a liquid crystal,18 two photon absorption on silicon metasurfaces19, 20 and nonlinear optomechanical reconfiguration in a free-standing silicon membrane metasurface.21 Figure 1. All-chalcogenide nano-grating metasurface. (a)