期刊
APPLIED PHYSICS LETTERS
卷 95, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3205115
关键词
fermion systems; graphene; optical frequency conversion; optical materials
资金
- Australian Research Council
- National Basic Research Program of China [2007CB310402]
- National Natural Science Foundation of China [60721004]
- major project and Hundred Scholar Plan of the Chinese Academy of Sciences
We demonstrate that within the model of massless Dirac fermions, graphene has a strong nonlinear optical response in the terahertz regime. It is found that the nonlinear contribution significantly alters both the single frequency and frequency tripled optical response at experimentally relevant field strengths. The optical activity of single layer graphene is significantly enhanced by nonlinear effects, and the frequency tripled response opens the gateway to photonic and optoelectronic device applications.
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