期刊
PHYSICAL REVIEW B
卷 90, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.90.125425
关键词
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资金
- FEDER COMPETE Program
- Portuguese Foundation for Science and Technology (FCT) [PEst-C/FIS/UI0607/2013]
- EC [CNECT-ICT-604391]
- Danish National Research Foundation [DNRF58]
- Program of Recruitment of Post Doctoral Researchers for the Portuguese Scientific and Technological System
- Operational Program Human Potential (POPH) of the QREN
- European Social Fund (ESF)
- Portuguese Ministry of Education and Science (MEC)
We use an exact solution of the relaxation-time Boltzmann equation in a uniform ac electric field to describe the nonlinear optical response of graphene in the terahertz (THz) range. The cases of monolayer, bilayer, and ABA-stacked trilayer graphene are considered, and the monolayer species is shown to be the most appropriate one to exploit the nonlinear free electron response. We find that a single layer of graphene shows optical bistability in the THz range, within the electromagnetic power range attainable in practice. The current associated with the third harmonic generation is also computed.
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