4.6 Article

Efficiency tunable broadband terahertz graphene metasurface for circular polarization anomalous reflection and plane focusing effect

Related references

Note: Only part of the references are listed.
Article Optics

Tri-band high-efficiency circular polarization convertor based on double-split-ring resonator structures

Yongzhi Cheng et al.

Summary: This paper introduces an effective design of a tri-band high-efficiency circular polarization convertor based on DSRR structures in the microwave region. The numerical simulation results show that the proposed CP convertor can achieve high efficiency and conversion ratios, with over 90% efficiency at three different resonance frequencies. The excellent tri-band CP properties have potential applications in fields such as remote sensing, radar, and satellite communication.

APPLIED PHYSICS B-LASERS AND OPTICS (2022)

Article Materials Science, Multidisciplinary

Switchable efficiency terahertz anomalous refraction and focusing based on graphene metasurface

Xuzheng Zhu et al.

Summary: This paper proposes and numerically investigates a graphene metasurface based on split-ring resonators (SRRs) structure, which can achieve highly efficient switchability of anomalous refraction and planar focusing effects. Numerical simulation results show that the proposed metasurface can realize polarization conversion with a transmission amplitude of about 0.4 and achieve a full 2 pi phase shift by changing the geometrical parameters of the SRRs structure. Furthermore, the efficiency of cross polarization transmission is highly dependent on the Fermi energy level of graphene. By designing a spatially phase profile and arrangement of unit-cell structure, anomalous refraction and planar focusing effect can be achieved, with the efficiencies switched by changing the Fermi energy level rather than the physical size.

DIAMOND AND RELATED MATERIALS (2022)

Article Optics

Efficiency adjustable terahertz circular polarization anomalous refraction and planar focusing based on a bi-layered complementary Z-shaped graphene metasurface

Xuzheng Zhu et al.

Summary: This paper proposes an efficiency adjustable metasurface composed of bi-layered complementary Z-shaped structure graphene, which can control the terahertz wavefront's circular polarization in transmission mode. The simulation results demonstrate that the metasurface structure can achieve efficient circular polarization conversion and a full range of phase shift by adjusting the rotation angle of the graphene. Additionally, the adjustable graphene metasurface can realize anomalous refraction and planar focusing effects, and the efficiencies can be adjusted by changing the graphene's Fermi energy level. This research highlights the wide application prospects of adjustable graphene metasurfaces in communication, imaging, and other terahertz wavefront manipulation devices.

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS (2022)

Article Optics

Dynamically controlled nanofocusing metalens based on graphene-loaded aperiodic silica grating arrays

Liu Lu et al.

Summary: A new plasmonic nanofocusing metalens based on aperiodic silica grating arrays has been designed and investigated. By utilizing graphene surface plasmon, the infrared polarized light can be focused in a nanospot with a dynamically controlled focal length. The study also analyzes the variation of focusing efficiency with incident wavelength and Fermi level.

OPTICS EXPRESS (2022)

Article Physics, Multidisciplinary

A novel polarization converter based on the band-stop frequency selective surface

Kun Liao et al.

Summary: A dual-passband single-polarized converter based on the band-stop frequency selective surface (FSS) is designed with a low radar cross-section (RCS). The simulation results demonstrate efficient polarization conversion and low co-polarization reflection coefficients in specific frequency ranges. Moreover, transmission windows are achieved in multiple frequency bands, and the design structure reduces radar cross-section.

CHINESE PHYSICS B (2022)

Article Materials Science, Multidisciplinary

Active wavefronts control with graphene-functionalized terahertz Metasurfaces

Dongjie Wang et al.

Summary: Graphene-functionalized metasurfaces have the potential to actively control linearly polarized waves in the terahertz region, enabling anomalous reflection and amplitude tuning. They can be applied in THz telecommunications, high-resolution THz displays, and advanced THz imaging devices.

DIAMOND AND RELATED MATERIALS (2022)

Article Physics, Multidisciplinary

High-efficiency terahertz full-space metasurface for the transmission linear and reflection circular polarization wavefront manipulation

Jun Li et al.

Summary: In this work, a high-efficiency full-space metasurface is numerically demonstrated, which can manipulate the transmitted linear polarization and the reflected circular polarization wavefront independently. The proposed metasurface structure achieves cross-polarization conversion and phase control at different frequencies, and demonstrates anomalous refraction, reflection, and beam manipulation for both LP and CP waves.

PHYSICS LETTERS A (2022)

Article Physics, Condensed Matter

Broadband reflective dual-functional polarization convertor based on all-metal metasurface in visible region

Yongzhi Cheng et al.

Summary: In this paper, a broadband reflective dual-functional polarization convertor based on all-metal anisotropic metasurface was proposed and numerically investigated in the visible region. The convertor showed high conversion efficiency and polarization extinction ratio, making it suitable for various applications.

PHYSICA B-CONDENSED MATTER (2022)

Article Physics, Multidisciplinary

Simple design of a six-band terahertz perfect metasurface absorber based on a single resonator structure

Yongzhi Cheng et al.

Summary: This paper presents a simple design of a six-band terahertz perfect metasurface absorber composed of a single circular-split-ring structure. The absorber achieves an average absorbance of 99.1% at six distinct frequencies under normal incident THz wave, and the distribution characteristics of the electric field indicate that the absorption peaks mainly originate from the combination of higher-order localized surface plasmon and propagating surface plasmon resonance modes. Additionally, the numerical investigation of the geometric parameters' influence on the resonance absorption properties of the metasurface absorber is also conducted.

PHYSICA SCRIPTA (2022)

Article Chemistry, Physical

Thermal tuning of terahertz metamaterial absorber properties based on VO2

Zhipeng Zheng et al.

Summary: A novel and structurally simple multifunctional broadband absorber is presented, using the thermogenic phase change properties of vanadium dioxide material to flexibly adjust absorption intensity and achieve near-perfect absorption in an ultra-broadband range.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

Article Chemistry, Multidisciplinary

Multi-mode surface plasmon resonance absorber based on dart-type single-layer graphene

Hao Chen et al.

Summary: This paper proposes a multi-mode surface plasmon resonance absorber based on dart-type single-layer graphene, which has the advantages of polarization independence, tunability, high sensitivity, and high figure of merit. The absorption effect and resonant wavelength can be dynamically tuned by adjusting the numerical values of the single-layer graphene array's structure and chemical potential.

RSC ADVANCES (2022)

Article Materials Science, Multidisciplinary

Tunable terahertz circular polarization convertor based on graphene metamaterial

Yongzhi Cheng et al.

Summary: This paper presents a tunable terahertz circular-polarization (CP) convertor based on graphene metamaterial, which can achieve high efficiency polarization conversion at specific Fermi energy levels and be continuously adjusted for various applications.

DIAMOND AND RELATED MATERIALS (2021)

Article Physics, Applied

High-efficiency ultrathin terahertz geometric metasurface for full-space wavefront manipulation at two frequencies

Junpeng Fan et al.

Summary: A bilayer metasurface with the ability to independently tailor the wavefronts of transmitted and reflected circularly polarized waves at two different terahertz frequencies is proposed in this paper. The metasurface can achieve a high conversion coefficient and a full 2π phase shift by varying the geometrical parameters of the unit-cell structure. Numerical simulations demonstrate anomalous refraction and reflection, dual-band full-space cylindrical focusing metalens, and vortex beam generation with different modes.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2021)

Article Multidisciplinary Sciences

Full-color enhanced second harmonic generation using rainbow trapping in ultrathin hyperbolic metamaterials

Junhao Li et al.

Summary: The authors demonstrate broadband enhanced second-harmonic generation in patterned multilayer hyperbolic metamaterial arrays, overcoming the typical narrow spectral bandwidth limitation of these materials. This approach allows for rainbow light trapping and boosted nonlinear light-matter interactions, showing promise for various important technologies.

NATURE COMMUNICATIONS (2021)

Article Optics

Thermally tunable terahertz vortex beam generator based on an InSb metasurface

Bin He et al.

Summary: A thermally tunable dielectric metasurface composed of InSb cylindrical micropillars is proposed for generating vortex beams in the terahertz region. The resonance frequency can be tuned by changing the diameter of the micropillars, showing stable performance at different temperatures. This metasurface has potential applications in terahertz imaging, detecting, and communication.

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS (2021)

Article Physics, Applied

Liquid crystal programmable metasurface for terahertz beam steering

Jingbo Wu et al.

APPLIED PHYSICS LETTERS (2020)

Article Materials Science, Multidisciplinary

Thermally Dependent Dynamic Meta-Holography Using a Vanadium Dioxide Integrated Metasurface

Xingbo Liu et al.

ADVANCED OPTICAL MATERIALS (2019)

Article Materials Science, Multidisciplinary

Amplitude Modulation of Anomalously Refracted Terahertz Waves with Gated-Graphene Metasurfaces

Teun-Teun Kim et al.

ADVANCED OPTICAL MATERIALS (2018)

Article Optics

Graphene-enabled electrically controlled terahertz meta-lens

Weiguang Liu et al.

PHOTONICS RESEARCH (2018)

Article Engineering, Electrical & Electronic

Wideband Tunable Cross Polarization Converter Based on a Graphene Metasurface With a Hollow-Carved H Array

Ming Chen et al.

IEEE PHOTONICS JOURNAL (2017)

Article Materials Science, Multidisciplinary

Broadband terahertz half-wave plate based on anisotropic polarization conversion metamaterials

Rui Xia et al.

OPTICAL MATERIALS EXPRESS (2017)

Article Physics, Multidisciplinary

Principles of electromagnetic waves in metasurfaces

Luo XianGang

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY (2015)

Article Physics, Applied

The nonlinear energy spectrum dependence of the optical conductivity in graphene

C. H. Yang et al.

JOURNAL OF APPLIED PHYSICS (2013)

Article Optics

Ultra-thin, planar, Babinet-inverted plasmonic metalenses

Xingjie Ni et al.

LIGHT-SCIENCE & APPLICATIONS (2013)

Article Engineering, Electrical & Electronic

An Overview of the Theory and Applications of Metasurfaces: The Two-Dimensional Equivalents of Metamaterials

Christopher L. Holloway et al.

IEEE ANTENNAS AND PROPAGATION MAGAZINE (2012)

Article Chemistry, Multidisciplinary

Graphene Plasmonics: A Platform for Strong Light-Matter Interactions

Frank H. L. Koppens et al.

NANO LETTERS (2011)

Article Materials Science, Multidisciplinary

Manipulating light polarization with ultrathin plasmonic metasurfaces

Yang Zhao et al.

PHYSICAL REVIEW B (2011)

Review Multidisciplinary Sciences

Metamaterials and negative refractive index

DR Smith et al.

SCIENCE (2004)

Article Multidisciplinary Sciences

Electric field effect in atomically thin carbon films

KS Novoselov et al.

SCIENCE (2004)