Analysis and Design of a Broadband Metasurface- Based Vortex Beam Generator

Metasurface-based vortex beam generators are very promising and applicable to enhance transmission data capacity in wireless communication system. However, most designs to date are ceased to predict their far-field characteristic, which is actually in demand when applied to wireless communication. Here, we find for the first time a deterministic and robust strategy to fastly estimate the exact far-field patterns and gain limit of a vortex beam based on the theoretical analysis of aperture field with spiral phase profile. For verification, a broadband metasurface-based vortex-beam generator based on geometric phase is designed, numerically calculated and experimentally measured at microwave regime. Excellent agreements are observed among far-field results obtained based on the proposed method, numerical simulations and experimental measurements, firmly demonstrating the validity and correctness of the proposed strategy. Such a deterministic and robust strategy of predicting far-field characteristics of a vortex beam may pave the way for its applications in many engineering scenarios, such as conical beam design, wireless communication, et al.

[1]  Li Jun Jiang,et al.  Artificial Perfect Electric Conductor-Perfect Magnetic Conductor Anisotropic Metasurface for Generating Orbital Angular Momentum of Microwave with Nearly Perfect Conversion Efficiency , 2016, 1602.04557.

[2]  Ji Xu,et al.  Generation of vector beam with space-variant distribution of both polarization and phase. , 2011, Optics letters.

[3]  Peiguo Liu,et al.  Theoretical Analyses and Design of Circular Array to Generate Orbital Angular Momentum , 2017, IEEE Transactions on Antennas and Propagation.

[4]  Zi He,et al.  Polarization-Controlled Shared-Aperture Metasurface for Generating a Vortex Beam With Different Modes , 2018, IEEE Transactions on Antennas and Propagation.

[5]  Zhijun Zhang,et al.  Generation of OAM Radio Waves Using Circular Vivaldi Antenna Array , 2013 .

[6]  Jianlin Zhao,et al.  High Efficiency Metasurfaces with Independent Control of Phase, Amplitude, and Polarization , 2018, 2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP).

[7]  Qun Wu,et al.  Phase-engineered metalenses to generate converging and non-diffractive vortex beam carrying orbital angular momentum in microwave region. , 2018, Optics express.

[8]  Johannes Courtial,et al.  Light’s Orbital Angular Momentum , 2004 .

[9]  Li Jun Jiang,et al.  Detection of Orbital Angular Momentum With Metasurface at Microwave Band , 2017, IEEE Antennas and Wireless Propagation Letters.

[10]  D. Werner,et al.  Phase-modulation based transmitarray convergence lens for vortex wave carrying orbital angular momentum. , 2018, Optics express.

[11]  Tong Cai,et al.  Wideband Transparent Beam-Forming Metadevice with Amplitude- and Phase-Controlled Metasurface , 2019, Physical Review Applied.

[12]  Ebrahim Karimi,et al.  Generating optical orbital angular momentum at visible wavelengths using a plasmonic metasurface , 2014, Light: Science & Applications.

[13]  D. Werner,et al.  Highly Efficient Broadband Multiplexed Millimeter-Wave Vortices from Metasurface-Enabled Transmit-Arrays of Subwavelength Thickness , 2018, Physical Review Applied.

[14]  K. Forozesh,et al.  Orbital Angular Momentum in Radio—A System Study , 2010, IEEE Transactions on Antennas and Propagation.

[15]  Andrea Alù,et al.  A Reconfigurable Active Huygens' Metalens. , 2017, Advanced materials.

[16]  Yijun Feng,et al.  Full control of conical beam carrying orbital angular momentum by reflective metasurface. , 2018, Optics express.

[17]  Shilie Zheng,et al.  A Flat-Lensed Spiral Phase Plate Based on Phase-Shifting Surface for Generation of Millimeter-Wave OAM Beam , 2016, IEEE Antennas and Wireless Propagation Letters.

[18]  Jian Wang,et al.  Metamaterials-based broadband generation of orbital angular momentum carrying vector beams. , 2013, Optics letters.

[19]  Linsheng Wu,et al.  A Reconfigurable Graphene Reflectarray for Generation of Vortex THz Waves , 2016, IEEE Antennas and Wireless Propagation Letters.

[20]  Cheng Huang,et al.  Dual-band vortex beam generation with different OAM modes using single-layer metasurface. , 2019, Optics express.

[21]  Cheng-Wu Zhang,et al.  High-efficiency transparent vortex beam generator based on ultrathin Pancharatnam-Berry metasurfaces. , 2019, Optics express.

[22]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[23]  Li Jun Jiang,et al.  Orbital Angular Momentum Generation and Detection by Geometric-Phase Based Metasurfaces , 2018, 1803.03402.

[24]  Guangming Wang,et al.  Wavenumber‐Splitting Metasurfaces Achieve Multichannel Diffusive Invisibility , 2018 .

[25]  Yijun Feng,et al.  Broadband Polarization-Conversion Metasurface for a Cassegrain Antenna with High Polarization Purity , 2019, Physical Review Applied.

[26]  Gang Liu,et al.  A Novel Broadband Bi-Functional Metasurface for Vortex Generation and Simultaneous RCS Reduction , 2018, IEEE Access.

[27]  J. P. Woerdman,et al.  Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[28]  M. Padgett,et al.  The generation of free-space Laguerre-Gaussian modes at millimetre-wave frequencies by use of a spiral phaseplate , 1996 .

[29]  F. Tamburini,et al.  Experimental verification of photon angular momentum and vorticity with radio techniques , 2011 .

[30]  A. Willner,et al.  Terabit free-space data transmission employing orbital angular momentum multiplexing , 2012, Nature Photonics.

[31]  Xiaoliang Ma,et al.  A planar chiral meta-surface for optical vortex generation and focusing , 2015, Scientific Reports.

[32]  He-Xiu Xu,et al.  Broadband Vortex Beam Generation Using Multimode Pancharatnam–Berry Metasurface , 2017, IEEE Transactions on Antennas and Propagation.