Two-dimensional localized modes in nonlinear systems with linear nonlocality and moiré lattices
文献类型:期刊论文
作者 | Liu, Xiuye3; Zeng, Jianhua1,2,3 |
刊名 | FRONTIERS OF PHYSICS |
出版日期 | 2024-08 |
卷号 | 19期号:4 |
ISSN号 | 2095-0462;2095-0470 |
关键词 | moire optical lattices gap solitons and vortices ultracold atoms Gross-Pitaevskii/nonlinear fractional Schrodinger equation nonlinear fractional systems |
DOI | 10.1007/s11467-023-1370-7 |
产权排序 | 1 |
英文摘要 | Periodic structures structured as photonic crystals and optical lattices are fascinating for nonlinear waves engineering in the optics and ultracold atoms communities. Moire photonic and optical lattices - two-dimensional twisted patterns lie somewhere in between perfect periodic structures and aperiodic ones - are a new emerging investigative tool for studying nonlinear localized waves of diverse types. Herein, a theory of two-dimensional spatial localization in nonlinear periodic systems with fractional-order diffraction (linear nonlocality) and moire optical lattices is investigated. Specifically, the flat-band feature is well preserved in shallow moire optical lattices which, interact with the defocusing nonlinearity of the media, can support fundamental gap solitons, bound states composed of several fundamental solitons, and topological states (gap vortices) with vortex charge s = 1 and 2, all populated inside the finite gaps of the linear Bloch-wave spectrum. Employing the linear-stability analysis and direct perturbed simulations, the stability and instability properties of all the localized gap modes are surveyed, highlighting a wide stability region within the first gap and a limited one (to the central part) for the third gap. The findings enable insightful studies of highly localized gap modes in linear nonlocality (fractional) physical systems with shallow moire patterns that exhibit extremely flat bands. |
语种 | 英语 |
出版者 | HIGHER EDUCATION PRESS |
WOS记录号 | WOS:001142014200001 |
源URL | [http://ir.opt.ac.cn/handle/181661/97153] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Zeng, Jianhua |
作者单位 | 1.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Ctr Attosecond Sci & Technol, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xiuye,Zeng, Jianhua. Two-dimensional localized modes in nonlinear systems with linear nonlocality and moiré lattices[J]. FRONTIERS OF PHYSICS,2024,19(4). |
APA | Liu, Xiuye,&Zeng, Jianhua.(2024).Two-dimensional localized modes in nonlinear systems with linear nonlocality and moiré lattices.FRONTIERS OF PHYSICS,19(4). |
MLA | Liu, Xiuye,et al."Two-dimensional localized modes in nonlinear systems with linear nonlocality and moiré lattices".FRONTIERS OF PHYSICS 19.4(2024). |
入库方式: OAI收割
来源:西安光学精密机械研究所
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