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Vortex beam manipulation through a tunable plasma-ferrite metamaterial
Davod Nobahar1, Sirous Khorram2,3, João D Rodrigues4
1Faculty of physics, University of Tabriz, Tabriz, 51666-16471, Iran. d.nobahar@tabrizu.ac.ir.
Scientific Reports
|August 7, 2021
Summary
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.
- 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.
