Giant Optical Nonlinearity of Graphene in a Strong Magnetic Field

被引：141

作者：

Yao, Xianghan ^{[1
]}

Belyanin, Alexey ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 25期

基金：

美国国家科学基金会;

关键词：

QUANTUM-CASCADE-LASER; MOBILE CARRIERS; GENERATION;

D O I：

10.1103/PhysRevLett.108.255503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：5

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