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Related Experiment Video

Updated: Jun 24, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Ultrafast terahertz transparency boosting in graphene meta-cavities.

Lan Wang^1,2, Ning An³, Sen Gong²

¹Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China.

Nanophotonics (Berlin, Germany)

|December 5, 2024

Summary

Researchers enhanced terahertz-graphene interaction using meta-cavities and patterned graphene. This boosts terahertz transparency by 46.2% with ultrafast optical control, advancing integrated optical devices.

Keywords:

graphene terahertz metasurface ultrafast optics

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

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Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

Area of Science:

Optoelectronics
Materials Science
Nanotechnology

Background:

Graphene's nonlinear properties are promising for terahertz (THz) applications.
Weak light-matter interaction in atomic-layer graphene hinders integrated optical device development.

Purpose of the Study:

To overcome weak light-matter interaction in graphene for enhanced THz applications.
To promote THz-graphene interaction using meta-cavities and patterned graphene.

Main Methods:

Designing meta-cavities combined with patterned graphene.
Utilizing an 800 nm pump laser to induce local field effects.
Investigating ultrafast energy transfer and THz wave modulation.

Main Results:

Achieved a 46.2% enhancement in terahertz transparency.
Demonstrated ultrafast optical modulation of THz waves with response times under 10 picoseconds.
Observed strong local field-induced interaction between THz waves and graphene.

Conclusions:

Meta-cavities significantly enhance THz-graphene interaction, overcoming limitations of atomic thickness.
The device offers sensitive ultrafast optical control of THz waves.
Graphene's properties enable electrically dynamic tuning and bandwidth broadening for future optical devices.