Abstract

We provide an analytical method for extracting detailed structural information about two-dimensional (2D) honeycomb lattices from optical second-harmonic generation (SHG) anisotropy patterns. When the lattice deviates from the ideal honeycomb structure, we relate the microscopic structural properties, such as bond length and bonding angle, to the macroscopic nonlinear susceptibility tensor based on the molecular bond additivity model. Our method will help quantitative studies of 2D materials with SHG and is readily applied to more general cases.

© 2020 Optical Society of America

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