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Vortex beam manipulation through a tunable plasma-ferrite metamaterial.

Davod Nobahar¹, Sirous Khorram^2,3, João D Rodrigues⁴

¹Faculty of physics, University of Tabriz, Tabriz, 51666-16471, Iran. d.nobahar@tabrizu.ac.ir.

Scientific Reports

|August 7, 2021

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This study explores vortex beam transmission through magnetized plasma-ferrite metamaterials, demonstrating controllable manipulation of light

Area of Science:

Optics and Photonics
Metamaterials Science
Plasma Physics

Background:

Vortex beams carry orbital angular momentum (OAM).
Plasma-ferrite structures exhibit unique electromagnetic properties, including negative refraction.
Controlling light propagation in such complex media is crucial for advanced optical applications.

Purpose of the Study:

To investigate the transmission characteristics of vortex beams through an adjustable magnetized plasma-ferrite structure.
To analyze the influence of magnetic fields and structural parameters on beam properties.
To explore the potential for novel optical device development.

Main Methods:

Utilized the angular spectral expansion technique.
Employed the transfer matrix method for analysis.

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Performed numerical simulations to determine transmitted intensity and phase profiles.

Main Results:

Observed high transparency and significant Faraday rotation near resonance frequencies.
Demonstrated reverse rotation of the spiral wavefront.
Identified side-band mode generation during beam propagation.

Conclusions:

The magnetized plasma-ferrite structure offers controllable manipulation of vortex beam intensity and phase.
These findings facilitate the development of active magneto-optical devices and OAM-based applications.
The research contributes to wavefront engineering and advanced optical technologies.