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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Anomalous Diffraction in Cold Magnetized Plasma.

Z Abelson¹, R Gad², S Bar-Ad¹

¹Sackler School of Physics and Astronomy, Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 6997801, Israel.

Physical Review Letters

|November 10, 2015

Summary

This summary is machine-generated.

This study demonstrates anomalous diffraction of microwave beams in magnetized plasma, showing plasma can act as a tunable metamaterial. Decreasing electron density reveals a transition from hyperbolic to standard material properties.

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Area of Science:

Plasma Physics
Electromagnetism
Metamaterials

Background:

Cold magnetized plasma exhibits an anisotropic permittivity tensor.
Specific electron densities and magnetic fields lead to unique dispersion relations.
Anomalous diffraction occurs for right-hand circularly polarized beams in such plasmas.

Purpose of the Study:

To experimentally demonstrate anomalous diffraction of microwave beams in magnetized plasma.
To investigate the transition from hyperbolic to standard material behavior by controlling electron density.
To explore the potential of plasma as a reconfigurable metamaterial-like medium.

Main Methods:

Experimental setup to generate and control cold magnetized plasma.
Transmission of a right-hand circularly polarized microwave beam through the plasma.
Measurement of beam diffraction patterns under varying electron densities and magnetic fields.

Main Results:

Successful experimental observation of anomalous diffraction of microwave beams.
Demonstrated transition from hyperbolic to standard material behavior by decreasing electron density.
Confirmation of plasma's potential as a tunable, reconfigurable metamaterial.

Conclusions:

Cold magnetized plasma can exhibit anomalous diffraction, behaving like a metamaterial.
Electron density is a key parameter for controlling plasma's electromagnetic properties.
Plasma offers a promising platform for developing reconfigurable metamaterial devices.