What is it about?
In low terahertz (THz) applications, achieving high output power is challenging. To address this, we investigate the quantum Čerenkov effect for amplifying low-THz signals. Using two-dimensional graphene between metal electrodes enhances field confinement and it generates in-plane electromagnetic radiation at higher rates—ten times more than non-confined plasmonic radiation. This configuration shows promise for efficient THz signal amplification.
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Why is it important?
Future communication technologies requires wider bandwidth to achieve higher communication speed. Thus the THz bands will play an important role for innovating this field. Our work proves the possibility to obtain high-frequency amplification through plasmonic emission in two-dimensional graphene.
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This page is a summary of: Strong enhancement of graphene plasmonic emission by quantum Čerenkov effect in confined structures, Applied Physics Letters, January 2024, American Institute of Physics,
DOI: 10.1063/5.0184863.
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