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Updated: May 31, 2026
11:42
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
Nonlinear electromagnetic response of graphene: frequency multiplication and the self-consistent-field effects
1Institute for Physics, University of Augsburg, D-86135 Augsburg, Germany.
Summary
Graphene exhibits strong nonlinear electromagnetic response due to its unique electronic properties. This study develops a theory to analyze frequency multiplication effects in graphene for terahertz electronics applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Electronics
Background:
- Graphene, a novel carbon allotrope, possesses unique electronic properties.
- Its charge carriers behave as massless Dirac fermions, leading to predicted nonlinear electromagnetic responses.
- Understanding these nonlinearities is crucial for advanced electronic applications.
Purpose of the Study:
- To develop a quasi-classical kinetic theory for graphene's nonlinear electromagnetic response.
- To investigate frequency multiplication effects under realistic experimental conditions.
- To analyze frequency upconversion efficiency and explore terahertz electronics applications.
Main Methods:
- Development of a quasi-classical kinetic theory.
- Inclusion of self-consistent-field effects.
- Analysis of harmonic and pulse excitation responses.
- Study of frequency upconversion efficiency versus electric field and sample parameters.
Main Results:
- The theory accurately describes graphene's nonlinear electromagnetic response.
- Frequency multiplication effects, such as frequency upconversion, are predicted and analyzed.
- Efficiency of frequency upconversion is quantified based on experimental parameters.
Conclusions:
- Graphene's strong nonlinearity enables significant frequency multiplication.
- The developed theory provides a framework for understanding and optimizing graphene-based nonlinear devices.
- Graphene holds promise for applications in terahertz electronics, particularly in frequency conversion.
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