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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Generating a multi-mode vortex beam based on spoof surface plasmon polaritons.

Juan-Feng Zhu, Chao-Hai Du, Zi-Wen Zhang

|September 1, 2022

Summary

This summary is machine-generated.

Researchers developed a new emitter for multi-mode vortex beams using spoof surface plasmon polaritons (SSPP). This compact and robust device shows promise for advanced wireless communication systems.

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Area of Science:

Electromagnetics and Optics
Metamaterials and Plasmonics
Wireless Communication Technologies

Background:

Vortex beams offer potential for next-generation wireless communication.
Generating multi-mode and robust vortex beams remains a significant challenge.

Purpose of the Study:

To introduce and experimentally verify a novel multi-mode vortex beam emitter.
To address the challenge of creating robust, multi-mode vortex beams for communication.

Main Methods:

Utilizing spoof surface plasmon polaritons (SSPP) on a helical grating to carry multi-mode orbital angular momentum.
Converting SSPP into a high-purity vortex beam through diffraction by a ring array.
Experimental verification of beam-scanning and vortex characteristics.

Main Results:

Successfully demonstrated a compact and robust multi-mode vortex beam emitter.
Verified that operation frequency and topological charge are tunable via SSPP.
Confirmed the emitter's capability for beam-scanning across radiation bands.

Conclusions:

The developed SSPP-based emitter effectively generates multi-mode vortex beams.
The emitter's compact design, robustness, and beam-scanning capability are advantageous.
This technology holds significant application potential for future communication systems.