期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 25, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.255503
关键词
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资金
- NSF [OISE-0968405, EEC-0540832, ECCS-0925446]
- NHARP [003658-0010-2009]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0925446] Funding Source: National Science Foundation
- Office Of Internatl Science &Engineering
- Office Of The Director [968405] Funding Source: National Science Foundation
We calculate the nonlinear optical response of graphene in strong magnetic and optical fields, using a quantum-mechanical density-matrix formalism. We show that graphene in a magnetic field possesses a giant mid-or far-infrared optical nonlinearity, perhaps the highest among known materials. The high nonlinearity originates from unique electronic properties and selection rules near the Dirac point. As a result, even one monolayer of graphene gives rise to an appreciable nonlinear frequency conversion efficiency for incident infrared radiation.
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