Unveiling optical in-plane anisotropy of 2D materials from oblique incidence of light. (30th May 2019)

• Record Type: Journal Article
• Authors: Oliva-Leyva, M; de la Cruz, G Gonzalez
• Is Part Of: Journal of physics. Volume 31:Number 33(2019)
• Publication Date: 2019-05-30
• Subjects: Fresnel coefficients -- anisotropic 2D material -- Breswter angle -- total internal reflection -- strained graphene; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab1f5c
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: 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.