Flexible Manipulation of Emitting Beams Using Single‐Aperture Circularly Polarized Digital Metasurface Antennas: Multi‐Beam Radiation toward Vortex‐Beam Generation

2020 ◽  
Vol 3 (4) ◽  
pp. 1900225 ◽  
Author(s):  
Morteza Nadi ◽  
Hamid Rajabalipanah ◽  
Ahmad Cheldavi ◽  
Ali Abdolali
Keyword(s):  
Vortex Beam ◽  
Beam Radiation ◽  
Circularly Polarized ◽  
Beam Generation ◽  
Single Aperture

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

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 Sub-Terahertz Vortex Beam Generation Using Spiral Metal Reflector

2021 ◽  
Author(s):  
Yumina Hira ◽  
Yasuaki Monnai
Keyword(s):  
Vortex Beam ◽  
Beam Generation

scholarly journals Longitudinal Component Properties of Circularly Polarized Terahertz Vortex Beams

2021 ◽  
Vol 9 ◽  
Author(s):  
Miao Wang ◽  
Xinke Wang ◽  
Peng Han ◽  
Wenfeng Sun ◽  
Shengfei Feng ◽  
...  
Keyword(s):  
Spot Size ◽  
Longitudinal Component ◽  
Transverse Component ◽  
Quarter Wave Plate ◽  
Phase Plate ◽  
Vortex Beam ◽  
Circularly Polarized ◽  
Left Hand ◽  
Quarter Wave ◽  
Focusing Properties

A circularly polarized vortex beam possesses similar focusing properties as a radially polarized beam. This type of beam is highly valuable for developing optical manufacturing technology, microscopy, and particle manipulation. In this work, a left-hand circularly polarized terahertz (THz) vortex beam (CPTVB) is generated by utilizing a THz quarter wave plate and a spiral phase plate. Focusing properties of its longitudinal component Ez are detailedly discussed on the simulation and experiment. With reducing the F-number of the THz beam and comparing with a transverse component Ex of a general circularly polarized THz beam, the simulation results show that the focal spot size and intensity of its Ez component can reach 87 and 50% of Ex under a same focusing condition. In addition, the experimental results still demonstrate that the left-hand CPTVB can always maintain fine Ez focusing properties in a broad bandwidth, which manifest the feasibility of this class of THz beams.

scholarly journals Ultrafast optical vortex beam generation in the ultraviolet

2016 ◽  
Vol 41 (12) ◽  
pp. 2715 ◽  
Author(s):  
N. Apurv Chaitanya ◽  
S. Chaitanya Kumar ◽  
Kavita Devi ◽  
G. K. Samanta ◽  
M. Ebrahim-Zadeh
Keyword(s):  
Optical Vortex ◽  
Vortex Beam ◽  
Beam Generation ◽  
Ultrafast Optical

scholarly journals Corrigendum to: Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths

Nanophotonics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 2359
Author(s):  
Raghu Dharmavarapu ◽  
Ken-ichi Izumi ◽  
Ikufumi Katayama ◽  
Soon Hock Ng ◽  
Jitraporn Vongsvivut ◽  
...  
Keyword(s):  
Vortex Beam ◽  
Beam Generation
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