Monolayer graphene under a strong magnetic field has fascinating electronic and optical properties, such as linear dispersion relation, massless Dirac low-energy electrons, chiral character of electron states and special selection rules between Landau levels. These properties involving the fields of quantum optics and solid material science provide great opportunities for the applications of coherent optics and nonlinear optics. In this paper, by solving the density-matrix formalism and Maxwell equation, we theoretically demonstrate that mono-layer graphene under a magnetic field can trigger a variety of optical effects. Generally ,speahing the interaction between external electromagnetic field and quantized Landau levels not only gives rise to coherent optical effects and nonlinear optical effects, but also leads to obvious linear and nonlinear optical responses. Furthermore, we also exhibit how to achieve these optical effects by introducing some examples, including terahertz (THz) signal detection, dynamic control of coherent pulses, giant optical nonlinearity of graphene, optical solitons, four wave mixing (FWM) and hyper-Raman scattering.%强磁场驱动下的单层石墨烯拥有奇特的电子和光学性质,具体包括线性的色散关系、无质量的Dirac低能电子、电子态的手征性和特殊的带内跃迁选择定则.这些性质已经涉及到量子光学和固体材料科学领域,也为相干光学和非线性光学的应用提供了基本素材.本论述从理论的角度,运用量子力学的方法求解密度矩阵和Maxwell传播方程,并在磁场驱动下的石墨烯中得到各种光学效应.更具体的说是外加电磁场与量子化的Landau能级发生相互作用,不仅使得这些Landau能级之间的电子态产生量子相干和量子干涉效应,而且带来了明显的线性和非线性光学回复.此外,还将以太赫兹(THz)检测、脉冲的相干调控、增强的非线性、光学孤子、四波混频和超Raman散射这几个具体的实例,来介绍如何实现强磁场驱动下的石墨烯的光学效应.
展开▼
