scholarly journals Gap‐Surface Plasmon Metasurfaces for Broadband Circular‐to‐Linear Polarization Conversion and Vector Vortex Beam Generation

2019 ◽  
Vol 7 (9) ◽  
pp. 1801414 ◽  
Author(s):  
Jacob T. Heiden ◽  
Fei Ding ◽  
Jes Linnet ◽  
Yuanqing Yang ◽  
Jonas Beermann ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Linear Polarization ◽  
Polarization Conversion ◽  
Vortex Beam ◽  
Beam Generation

scholarly journals Focused vortex-beam generation using gap-surface plasmon metasurfaces

Nanophotonics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 371-378 ◽  
Author(s):  
Fei Ding ◽  
Yiting Chen ◽  
Sergey I. Bozhevolnyi
Keyword(s):  
Surface Plasmon ◽  
Optical Communication ◽  
Linear Polarization ◽  
High Performance ◽  
Polarization Conversion ◽  
Vortex Beam ◽  
Beam Generation ◽  
Half Wave ◽  
Wide Range ◽  
Polarized Beam

AbstractIn spite of a wide range of applications ranging from particle trapping to optical communication, conventional methods to generate vortex beams suffer from bulky configurations and limited performance. Here, we design, fabricate, and experimentally demonstrate orthogonal linear-polarization conversion and focused vortex-beam generation simultaneously by using gap-surface plasmon metasurfaces that enable high-performance linear-polarization conversion along with the complete phase control over reflected fields, reproducing thereby the combined functionalities of traditional half-wave plates, lenses, and q-plates. The fabricated metasurface sample features the excellent capability of orthogonal linear-polarization conversion and focused vortex-beam generation within the wavelength range of 800–950 nm with an averaged polarization conversion ratio of ~80% and absolute focusing efficiency exceeding 27% under normal illumination with the x-polarized beam. We further show that this approach can be extended to realize a dual-focal metasurface with distinctly engineered intensity profiles by using segmented metasurfaces, where an orthogonal-polarized beam with Gaussian-distributed intensity and a vortex beam with intensity singularity have been experimentally implemented. The proposed multifunctional metasurfaces pave the way for advanced research and applications targeting photonics integration of diversified functionalities.

Bidirectional multi-mode microwave vortex beam generation enabled by spoof surface plasmon polaritons

2020 ◽  
Vol 117 (24) ◽  
pp. 241601
Author(s):  
Hao Feng ◽  
Longfang Ye ◽  
Yong Zhang ◽  
Weiwen Li ◽  
Huanyang Chen ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Vortex Beam ◽  
Beam Generation ◽  
Multi Mode ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

Vortex Beam Generation Based on Plasma Reflect-Array Surface at Microwave Frequencies

2021 ◽  
pp. 1-7
Author(s):  
Ehsan Koohkan ◽  
Saughar Jarchi ◽  
Ayaz Ghorbani ◽  
Mohammad Bod
Keyword(s):  
Vortex Beam ◽  
Microwave Frequencies ◽  
Beam Generation

Broadband linear polarization conversion based on the coupling of bilayer metamaterials in the terahertz region

2017 ◽  
Vol 383 ◽  
pp. 310-315 ◽  
Author(s):  
Rui Xia ◽  
Xufeng Jing ◽  
Huihui Zhu ◽  
Weimin Wang ◽  
Ying Tian ◽  
...  
Keyword(s):  
Linear Polarization ◽  
Polarization Conversion ◽  
Terahertz Region

scholarly journals Vector Vortex Beam Generation with a Single Plasmonic Metasurface

ACS Photonics ◽  
2016 ◽  
Vol 3 (9) ◽  
pp. 1558-1563 ◽  
Author(s):  
Fuyong Yue ◽  
Dandan Wen ◽  
Jingtao Xin ◽  
Brian D. Gerardot ◽  
Jensen Li ◽  
...  
Keyword(s):  
Vortex Beam ◽  
Beam Generation

scholarly journals Arbitrary polarization conversion for pure vortex generation with a single metasurface

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 727-732
Author(s):  
Marco Piccardo ◽  
Antonio Ambrosio
Keyword(s):  
Angular Momentum ◽  
Polarization Conversion ◽  
Vortex Beam ◽  
Vortex Generation ◽  
Optical Elements ◽  
Amplitude Control ◽  
Cavity Resonators ◽  
Vortex Beams ◽  
Topological Charges ◽  
Selection Of

AbstractThe purity of an optical vortex beam depends on the spread of its energy among different azimuthal and radial modes, also known as $\ell $- and p-modes. The smaller the spread, the higher the vortex purity and more efficient its creation and detection. There are several methods to generate vortex beams with well-defined orbital angular momentum, but only few exist allowing selection of a pure radial mode. These typically consist of many optical elements with rather complex arrangements, including active cavity resonators. Here, we show that it is possible to generate pure vortex beams using a single metasurface plate—called p-plate as it controls radial modes—in combination with a polarizer. We generalize an existing theory of independent phase and amplitude control with birefringent nanopillars considering arbitrary input polarization states. The high purity, sizeable creation efficiency, and impassable compactness make the presented approach a powerful complex amplitude modulation tool for pure vortex generation, even in the case of large topological charges.

Sign in / Sign up

Export Citation Format

Share Document