Journal ArticleDOI
Terahertz Quarter Wave-Plate Metasurface Polarizer Based on Arrays of Graphene Ribbons
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TLDR
In this paper, a novel graphene-dielectric-based metasurface for manipulating the polarization of the incident light in the terahertz regime is proposed, which consists of two orthogonally oriented periodic array of graphene ribbons.Abstract:
We propose a novel graphene-dielectric-based metasurface for manipulating the polarization of the incident light in the terahertz regime. The proposed structure comprised two orthogonally oriented periodic array of graphene ribbons (PAGRs) which are separated by a dielectric spacer and deposited on an Au-backed dielectric substrate. Based on the transmission line theory, an equivalent model with excellent accuracy is suggested for the proposed structure. By leveraging the simplicity of the model, we design a three-state quarter wave plate that is able to dynamically switch the polarization of the reflected wave to linear, right-, and left-hand polarizations while keeping the reflected amplitude remarkably high. Thanks to the simplicity of the model, the proposed structure can be easily used for designing other metasurfaces for light propagation control applications in imaging, sensing, and telecommunication.read more
Citations
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Gate-Variable Optical Transitions in Graphene
Feng Wang,Yuanbo Zhang,Chuanshan Tian,Caglar Girit,Alex Zettl,Michael F. Crommie,Y. Ron Shen +6 more
TL;DR: The strong and layer-dependent optical transitions of graphene and the tunability by simple electrical gating hold promise for new applications in infrared optics and optoelectronics.
Journal ArticleDOI
Ultrathin broadband metasurface-based absorber comprised of tungsten nanowires
R.M.H. Bilal,Muhammad Abuzar Baqir,Pankaj Kumar Choudhury,M. A. Naveed,Muhammad Mahmood Ali,Arbab Abdur Rahim +5 more
TL;DR: In this article, an ultrathin broadband metasurface-based absorber, comprised of tungsten nanowires, was studied under the normal and oblique incidence of transverse electric (TE) and transverse magnetic (TM) waves.
Journal ArticleDOI
Broadband switchable terahertz half-/quarter-wave plate based on metal-VO2 metamaterials.
TL;DR: Results show that the proposed broadband switchable HWP/QWP has a large angular tolerance, and it is expected that this broadband and switchable multi-functional wave plate will find applications in polarization-dependent terahertz systems including sensing, imaging, and telecommunications.
Journal ArticleDOI
Tunable and Multiple Plasmon-Induced Transparency in a Metasurface Comprised of Silver S-Shaped Resonator and Rectangular Strip
R.M.H. Bilal,Muhammad Abuzar Baqir,Pankaj Kumar Choudhury,Muhammad Mahmood Ali,Arbab Abdur Rahim +4 more
TL;DR: In this paper, the plasmon-induced transparency (PIT) in planar metasurface comprising of resonators having one S-shaped structure and a rectangular strip (both made of silver) was investigated.
Journal ArticleDOI
Broadband terahertz polarization converter with anomalous reflection based on phase gradient metasurface
TL;DR: In this paper, a broadband polarization converter based on phase gradient metasurface is proposed for simultaneously manipulating the polarization and the wavefront of the reflected wave in terahertz region.
References
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Journal ArticleDOI
A roadmap for graphene
Kostya S. Novoselov,Vladimir I. Fal'ko,Luigi Colombo,Paul Gellert,M. G. Schwab,Kyoung-Soo Kim +5 more
TL;DR: This work reviews recent progress in graphene research and in the development of production methods, and critically analyse the feasibility of various graphene applications.
Journal ArticleDOI
Flat Optics With Designer Metasurfaces
Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
Journal ArticleDOI
Planar Photonics with Metasurfaces
TL;DR: Progress in the optics of metasurfaces is reviewed and promising applications for surface-confined planar photonics components are discussed and the studies of new, low-loss, tunable plasmonic materials—such as transparent conducting oxides and intermetallics—that can be used as building blocks for metAsurfaces will complement the exploration of smart designs and advanced switching capabilities.
Journal ArticleDOI
Dyadic Green's functions and guided surface waves for a surface conductivity model of graphene
TL;DR: In this paper, an exact solution for the electromagnetic field due to an electric current in the presence of a surface conductivity model of graphene is obtained in terms of dyadic Green's functions represented as Sommerfeld integrals.
Journal ArticleDOI
Optically resonant dielectric nanostructures
Arseniy I. Kuznetsov,Andrey E. Miroshnichenko,Mark L. Brongersma,Yuri S. Kivshar,Boris Luk'yanchuk,Boris Luk'yanchuk +5 more
TL;DR: How high-index dielectric nanoparticles can offer a substitute for plasmonic nanoparticle structures, providing a highly flexible and low-loss route to the manipulation of light at the nanoscale is reviewed.