Design and performance evaluation of orbital angular momentum metasurface for THz vortex waves generation based on fourier transform

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10259344" target="_blank" >RIV/61989100:27240/25:10259344 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2025.1702903/full" target="_blank" >https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2025.1702903/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fphy.2025.1702903" target="_blank" >10.3389/fphy.2025.1702903</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Design and performance evaluation of orbital angular momentum metasurface for THz vortex waves generation based on fourier transform

Popis výsledku v původním jazyce

Introduction: Because it is anticipated to be a new physical quantity for communication multiplexing and has significant potential for increasing channel capacity and enhancing spectrum resource utilization, researchers have been looking more closely at orbital angular momentum (OAM). Because of its potential to increase transmission capacity, vortex beams carrying orbital angular momentum (OAM) have recently become a focus of much investigation. One of the main challenges now is how to effectively manufacture OAM in the terahertz (THz) spectrum because existing THz vortex wave generation devices are constrained by only functioning at one frequency, having a small bandwidth, and having low conversion efficiency. Methods: Therefore, this paper proposes a novel OAM metasurface design for generating vortex electromagnetic waves in the THz spectrum. The Pancharatnam-Berry phase idea and the phase superposition principle were used to create a single-layer reflective metasurface and a projected ultra-wideband reflective meta-atom. Results and discussion: Each OAM mode in the reflected field was broken down using the Fourier transform, and the purity of the OAM modes was quantitatively examined. The dominant OAM mode had the highest energy weight share (l = −2) in all vortex waves at various frequencies, and the designed metasurface was further optimized to enhance the energy share corresponding to the dominant mode. With its high main mode energy, wide operating bandwidth, and excellent conversion efficiency, the proposed metasurface provides a benchmark for the effective production of wideband THz vortex waves. © © 2025 Nasimov, Prauzek, Konecny, Abdelhaq, Soto-Diaz, Escorcia-Gutierrez and Andriukaitis.

Název v anglickém jazyce

Design and performance evaluation of orbital angular momentum metasurface for THz vortex waves generation based on fourier transform

Popis výsledku anglicky

Introduction: Because it is anticipated to be a new physical quantity for communication multiplexing and has significant potential for increasing channel capacity and enhancing spectrum resource utilization, researchers have been looking more closely at orbital angular momentum (OAM). Because of its potential to increase transmission capacity, vortex beams carrying orbital angular momentum (OAM) have recently become a focus of much investigation. One of the main challenges now is how to effectively manufacture OAM in the terahertz (THz) spectrum because existing THz vortex wave generation devices are constrained by only functioning at one frequency, having a small bandwidth, and having low conversion efficiency. Methods: Therefore, this paper proposes a novel OAM metasurface design for generating vortex electromagnetic waves in the THz spectrum. The Pancharatnam-Berry phase idea and the phase superposition principle were used to create a single-layer reflective metasurface and a projected ultra-wideband reflective meta-atom. Results and discussion: Each OAM mode in the reflected field was broken down using the Fourier transform, and the purity of the OAM modes was quantitatively examined. The dominant OAM mode had the highest energy weight share (l = −2) in all vortex waves at various frequencies, and the designed metasurface was further optimized to enhance the energy share corresponding to the dominant mode. With its high main mode energy, wide operating bandwidth, and excellent conversion efficiency, the proposed metasurface provides a benchmark for the effective production of wideband THz vortex waves. © © 2025 Nasimov, Prauzek, Konecny, Abdelhaq, Soto-Diaz, Escorcia-Gutierrez and Andriukaitis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20202 - Communication engineering and systems

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Frontiers in Physics

ISSN

2296-424X

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

december 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

01-14

Kód UT WoS článku

001645275000001

EID výsledku v databázi Scopus

2-s2.0-105025648502