Solitons in composite linear–nonlinear moiré lattices
We produce families of two-dimensional gap solitons (GSs) maintained by moiré lattices (MLs) composed of linear and nonlinear sublattices, with the defocusing sign of the nonlinearity. Depending on the angle between the sublattices, the ML may be quasiperiodic or periodic, composed of mutually incommensurate or commensurate sublattices, respectively (in the latter case, the inter-lattice angle corresponds to Pythagorean triples). The GSs include fundamental, quadrupole, and octupole solitons, as well as quadrupoles and octupoles carrying unitary vorticity. Stability segments of the GS families are identified by means of the linearized equation for small perturbations, and confirmed by direct simulations of perturbed evolution.
Authors
- Dumitru Mihalache (ORCID: https://orcid.org/0000-0002-8605-176X)
- Liangwei Zeng (ORCID: https://orcid.org/0000-0001-9603-1845)
- Jingzhen Li (ORCID: https://orcid.org/0000-0003-2302-3734)
- Xing Zhu (ORCID: https://orcid.org/0000-0002-3218-8381)
- Boris A. Malomed (ORCID: https://orcid.org/0000-0001-5323-1847)
Institutions
- Tel Aviv University (IL)
- Shenzhen University (CN)
- University of Tarapacá (CL)
- Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Guangzhou Maritime College (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1364/ol.546501
- Citations
- 21
- Primary Topic
- Nonlinear Photonic Systems
- Type
- article
- Field-Weighted Citation Impact
- 5.90
Funders
- National Natural Science Foundation of China
- Israel Science Foundation
- Basic and Applied Basic Research Foundation of Guangdong Province