Twist-induced optical transmission and cross-polarization effects in black-phosphorene–calcite heterostructures
Phys. Rev. B 114, 165404 – Published 2 September, 2026
DOI: https://doi.org/10.1103/kh8y-fqvm
Abstract
The anisotropy of black phosphorene (BP) and calcite endows light transmission with novel tunable features. A multilayer dielectric structure incorporating BP-calcite is designed. Using the transfer matrix method, the modulation of light reflectance, transmittance, and absorptance by incident light as well as the twist angles of BP and calcite is systematically investigated. When the principal axes of BP and calcite are rotated within the plane of incidence, copolarized and cross-polarized reflected and transmitted waves are induced, thereby enabling flexible modulation of the magnitude and peak positions of light absorption under TE and TM polarizations, which vary monotonically with the increase of twist angles. Under grazing incidence of TE mode, with a fixed twist angle of calcite, absorption near 20 THz exhibits robust characteristics, while other absorption peaks show a blueshift with increasing BP twist angle. In contrast, with a fixed BP twist angle, absorption peaks above 40 THz exhibit a redshift with increasing calcite twist angle. The generation mechanism of cross-polarization is analyzed and effectively enhanced using a Kretschmann-like structure. This study provides an important theoretical foundation for the regulation of light transmission in multilayer anisotropic materials, enhancement of cross-polarization, and the design and fabrication of optical functional devices.
