Fig. 3: Optical properties of van der Waals As2S3.
From: Exploring van der Waals materials with high anisotropy: geometrical and optical approaches
Experimental polarized micro-transmittance spectra of an As2S3 flake for a parallel- and b cross-polarized configurations. Calculated polarized micro-transmittance of As2S3 for c parallel- and d cross-polarized configurations. The dashed lines show the position of crystallographic axes a (red line) and c (green line). e Anisotropic optical constants of As2S3. The inset shows the in-plane birefringence of As2S3. Tabulated optical constants of As2S3 are collected in Supplementary Note 7
