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

Polarization-insensitive dual-wideband fractal meta-absorber for terahertz applications

Not Accessible

Your library or personal account may give you access

Abstract

Terahertz (THz) metamaterial absorbers have realized a prodigious reputation due to the limitation of natural absorbing materials in this range. Getting wideband absorption characteristics is challenging and arduous, especially in the THz band. Self-similar repeated fractal elements offer a promising solution to attain broadband absorption response due to their inherent multiple resonance characteristics. Therefore, by captivating the advantage of fractal geometry, we proposed a dual and wideband meta-absorber operating in the THz regime. The metamaterial absorber design comprises the assembly of self-similar square-shaped blocks arranged in a specific pattern to construct the fractal geometry. The proposed THz absorber demonstrates 90% absorption under normal incident waves for two operating bands from 9.5–10.55 THz and 12.3–13.35 THz. The suggested metamaterial absorber also shows good and stable absorption responses under different oblique incidence angles for transverse electric (TE) and transverse magnetic (TM) wave polarization. Moreover, this absorber manifests over 85% absorptivity in its entire operating range (9–14 THz) under the incidence angle of 60° and 70° for TM mode. Furthermore, it gives a polarization-insensitive behavior under the effect of different polarization angles. This kind of wideband absorber catches fascinating applications in THz detection, imaging, cloaking, and optoelectronic devices.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Design of a wideband terahertz metamaterial absorber based on Pythagorean-tree fractal geometry

R. M. H. Bilal, M. A. Naveed, M. A. Baqir, M. M. Ali, and A. A. Rahim
Opt. Mater. Express 10(12) 3007-3020 (2020)

Ultrawideband fractal metamaterial absorber made of nickel operating in the UV to IR spectrum

Muhammad Ashar Naveed, Rana Muhammad Hasan Bilal, Muhammad Abuzar Baqir, Muhammad Mehran Bashir, Muhammad Mahmood Ali, and Arbab Abdur Rahim
Opt. Express 29(26) 42911-42923 (2021)

Triangular metallic ring-shaped broadband polarization-insensitive and wide-angle metamaterial absorber for visible regime

Rana Muhammad Hasan Bilal, Muhammad Abuzar Baqir, Musab Hameed, Syed Aftab Naqvi, and Muhammad Mahmood Ali
J. Opt. Soc. Am. A 39(1) 136-142 (2022)

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 (9)

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 (1)

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 (7)

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