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Updated: Feb 2, 2026
10:54
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
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Efficient terahertz transmission modulation in plasmonic metallic slits by a graphene ribbon array
Applied Optics
|November 22, 2018
Summary
Researchers demonstrate efficient terahertz transmission modulation using graphene plasmonic ribbons. This method achieves a deep transmittance depression, significantly controlling wave propagation through subwavelength slits.
Area of Science:
- Optics and Photonics
- Materials Science
- Terahertz Technology
Background:
- Extraordinary optical transmission (EOT) is characterized by enhanced wave transmission through subwavelength apertures.
- Controlling EOT in the terahertz (THz) spectrum is crucial for advanced photonic devices.
Purpose of the Study:
- To propose and investigate efficient THz transmission modulation in subwavelength metallic slits.
- To utilize a graphene plasmonic ribbon array for tunable EOT control.
Main Methods:
- Numerical simulations were employed to model the proposed system.
- The interaction between THz waves, metallic slits, and graphene plasmonic resonances was analyzed.
Main Results:
- A deep transmittance depression was achieved by coupling EOT with graphene plasmonic resonance.
- A maximal transmission modulation depth of 98.99% was obtained at 1.03 THz.
Conclusions:
- Graphene plasmonic ribbon arrays offer an effective mechanism for THz transmission modulation.
- The proposed method enables precise control over wave propagation in subwavelength structures.
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