Observation of linear and nonlinear light localization at the edges of moir\'e lattices
Abstract
We observe linear and nonlinear light localization at the edges and in the corners of truncated moir\'e lattices created by the superposition of periodic mutually-twisted at Pythagorean angles square sublattices. Experimentally exciting corner linear modes in the fs-laser written moir\'e lattices we find drastic differences in their localization properties in comparison with the bulk excitations. We also address the impact of nonlinearity on the corner and bulk modes and experimentally observe the crossover from linear quasi-localized states to the surface solitons emerging at the higher input powers. Our results constitute the first experimental demonstration of localization phenomena induced by truncation of periodic moir\'e structures in photonic systems.
Keywords
Cite
@article{arxiv.2301.02090,
title = {Observation of linear and nonlinear light localization at the edges of moir\'e lattices},
author = {A. A. Arkhipova and Y. V. Kartashov and S. K. Ivanov and S. A. Zhuravitskii and N. N. Skryabin and I. V. Dyakonov and A. A. Kalinkin and S. P. Kulik and V. O. Kompanets and S. V. Chekalin and F. Ye and V. V. Konotop and L. Torner and V. N. Zadkov},
journal= {arXiv preprint arXiv:2301.02090},
year = {2023}
}
Comments
5 pages, 4 figures, to appear in Physical Review Letters