Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Electromagnetic wave beam manipulator based on an all-dielectric THz coding metasurface

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, we proposed an all-dielectric THz coding metasurface that can effectively manipulate electromagnetic waves. This structure was composed of sub-wavelength coding units with different reflection phases. The encoding unit is composed of a rectangular base with a cross dielectric column. Different encodings were designed by changing the thickness of the X arm of the dielectric column. We designed a variety of coding modes and implemented the modulation of the number of far-field reflection beams and the angle of reflection direction at 0.85 THz by 1- and 2-bit coding. Our theoretical calculations and numerical simulations of the structure suggested that the far-field scattering obtained by full-wave simulation matched the theoretical calculation when the incident direction of electromagnetic wave was perpendicular to the metasurface. We chose all-dielectric materials to design the coding unit due to the low cost, strong corrosion resistance, and low internal electromagnetic loss. As a result, the all-dielectric materials avoided the serious internal loss of metal materials and demonstrated the flexibility to regulate the reflected beam in the THz band to realize abnormal refraction and beam splitting.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Broadband tunable coding metasurfaces based on a metal patch and graphene for beam control at the terahertz frequencies

Panpeng Ge, Ying Zhang, Lihua Xiao, and Binggang Xiao
Appl. Opt. 61(17) 5152-5160 (2022)

Manipulation of the arbitrary scattering angle based on all-dielectric transmissive Pancharatnam Berry phase coding metasurfaces in the visible range

Ying Tian, Xufeng Jing, Hao Yu, Haiyong Gan, Chenxia Li, and Zhi Hong
Opt. Express 28(21) 32107-32123 (2020)

Terahertz wave front manipulation based on Pancharatnam-Berry coding metasurface

Li Shao-he, Li Jiu-sheng, and Sun Jian-zhong
Opt. Mater. Express 9(3) 1118-1127 (2019)

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved