Oliva-Leyva M, de la Cruz G Gonzalez
J Phys Condens Matter. 2019 Aug 21;31(33):335701. doi: 10.1088/1361-648X/ab1f5c. Epub 2019 May 3.
In this work, we present a theoretical study of the dispersion of linearly polarized light between two dielectric media separated by an anisotropic two-dimensional (2D) material under oblique incidence. Assuming that the 2D material is a conducting sheet of negligible thickness, generalized Fresnel coefficients are derived as a function of usual quantities (e.g. refraction indexes and scattering angles) and the anisotropic in-plane optical conductivity of the interstitial 2D material. In particular, we analyzed the modifications due to the 2D material of two classical optical phenomena: the Brewster effect and the total internal reflection. As a application, our general findings are particularized for uniaxially strained graphene. Effects of a uniaxial strain on the Brewster angle and the reflectance (under total internal reflection) are evaluated as a function of the magnitude and direction of strain.
在这项工作中，我们对斜入射下由各向异性二维（2D）材料分隔的两种介电介质之间的线偏振光色散进行了理论研究。假设该二维材料是厚度可忽略不计的导电薄片，推导出广义菲涅耳系数，它是通常量（例如折射率和散射角）以及间隙二维材料的面内各向异性光导率的函数。特别地，我们分析了二维材料对两种经典光学现象的影响：布儒斯特效应和全内反射。作为应用，我们将一般结果具体应用于单轴应变的石墨烯。评估了单轴应变对布儒斯特角和（全内反射下的）反射率的影响，其作为应变大小和方向的函数。
