Vortex solitons in moire optical lattices
arXiv:2306.15358 · doi:10.1364/OL.494681
Abstract
We show that optical moire lattices enable the existence of vortex solitons of different types in self-focusing Kerr media. We address the properties of such states both in lattices having commensurate and incommensurate geometries (i.e., constructed with Pythagorean and non-Pythagorean twist angles, respectively), in the different regimes that occur below and above the localization-delocalization transition. We find that the threshold power required for the formation of vortex solitons strongly depends on the twist angle and, also, that the families of solitons exhibit intervals where their power is a nearly linear function of the propagation constant and they exhibit strong stability. Also, in the incommensurate phase above the localization-delocalization transition, we found stable embedded vortex solitons whose propagation constants belong to the linear spectral domain of the system.
References in corpus (13)
- Localization and delocalization of light in photonic moire lattices
- Observation of discrete vortex solitons in optically-induced photonic lattices
- Fundamental and vortex solitons in a two-dimensional optical lattice
- Moiré Hyperbolic Metasurfaces
- Optical soliton formation controlled by angle twisting in photonic moiré lattices
- Rotary solitons in Bessel photonic lattices
- Regular spatial structures in arrays of Bose-Einstein condensates induced by modulational instability
- Asymmetric vortex solitons in nonlinear periodic lattices
- Vortex transmutation
- Gap solitons in quasiperiodic optical lattices
- Vorticity cutoff in nonlinear photonic crystals
- Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moire superlattices
- Observation of linear and nonlinear light localization at the edges of moiré lattices