arXiv 2007.157442020-07physics.opticscond-mat.mes-hall

光磁学的非线性光学：量子和经典处理

Nonlinear Optics of optomagnetics: Quantum and Classical Treatments

A. Hamed Majedi, Brahim Lounis

摘要：

光磁学作为一个交叉光学、磁学和材料科学的新兴研究领域而出现。本文从非线性光学的角度出发，提出了一个微观量子力学模型和一个宏观经典模型来描述光磁效应。我们的自洽量子力学公式考虑所有订单的扰动场和结果不仅在寻找广义Pitaevskii的关系，其中光致磁化强度可以扩大光功率方面，但也提供了紧凑的光学回转矢量系数的解析表达式。然后基于非谐波Drude-Lorentz模型开发经典处理，该模型表明光致DC磁化与光功率的奇次谐波成比例。揭示和讨论了量子结果与经典结果的差异。考虑到一个pomp探针设置，我们描述了如何探测光信号可以传播下来的光磁介质，即一种介质，是由强烈的圆偏振泵浦光磁化，通过其介电常数张量，并找到光传播特性。本文讨论了由圆双折射和线双折射引起的逆法拉第效应和Cotton-Mouton效应，并解析地求出了它们的费尔德常数。

英文摘要：

Optomagnetics emerges as a growing field of research cross-linking optics, magnetism and material science. Here, we provide a microscopic quantum mechanical and a macroscopic classical models to describe optomagnetic effects from nonlinear optics point of view. Our self-consistent quantum mechanical formulation considers all orders of perturbing field and results not only in finding generalized Pitaevskii's relationship, where photoinduced magnetization can be expanded in terms of light power, but also provide compact and analytical expressions for optical gyration vector coefficients. classical treatment is then developed based on the anharmonic Drude-Lorentz model showing that the photo-induced DC magnetization is proportional to odd harmonics of the light power. The difference in quantum and classical results are revealed and discussed. Having a pomp-probe setup in mind, we describe how a probe light signal can propagate down an optomagnetic medium, i.e. a medium that is magnetized by intense circularly-polarized pump light, via its permittivity tensor and find light propagation characteristics. Inverse Faraday and Cotton-Mouton Effects are discussed as a result of circular and linear birefringences and their Verdet constants have been analytically found.

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