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Preventing critical collapse of higher-order solitons by tailoring unconventional optical diffraction and nonlinearities
Zeng, Liangwei1,2; Zeng, Jianhua1,2,3
作者部门瞬态光学研究室
2020-01-28
发表期刊COMMUNICATIONS PHYSICS
ISSN2399-3650
卷号3期号:1
产权排序1
摘要

Stabilising localised solitons in higher dimensions is more challenging than their one dimensional counterpart due to the onset of critical collapse. Here, competing nonlinear terms are added to a linearly-modulated optical lattice to predict regimes of stability for different soliton families. Self-trapped modes suffer critical collapse in two-dimensional cubic systems. To overcome such a collapse, linear periodic potentials or competing nonlinearities between self-focusing cubic and self-defocusing quintic nonlinear terms are often introduced. Here, we combine both schemes in the context of an unconventional and nonlinear fractional Schrodinger equation with attractive-repulsive cubic-quintic nonlinearity and an optical lattice. We report theoretical results for various two-dimensional trapped solitons, including fundamental gap and vortical solitons as well as the gap-type soliton clusters. The latter soliton family resembles the recently-found gap waves. We uncover that, unlike the conventional case, the fractional model exhibiting fractional diffraction order strongly influences the formation of higher band gaps. Hence, a new route for the study of self-trapped modes in these newly emergent higher band gaps is suggested. Regimes of stability and instability of all the soliton families are obtained with the help of linear-stability analysis and direct simulations.

DOI10.1038/s42005-020-0291-9
收录类别SCI ; EI
语种英语
WOS记录号WOS:000511462000001
出版者NATURE PUBLISHING GROUP
EI入藏号20201708524014
引用统计
被引频次:57[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/93238
专题瞬态光学研究室
通讯作者Zeng, Jianhua
作者单位1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Ultrafast Photoelect Diagnost Technol, Xian 710119, Peoples R China
推荐引用方式
GB/T 7714
Zeng, Liangwei,Zeng, Jianhua. Preventing critical collapse of higher-order solitons by tailoring unconventional optical diffraction and nonlinearities[J]. COMMUNICATIONS PHYSICS,2020,3(1).
APA Zeng, Liangwei,&Zeng, Jianhua.(2020).Preventing critical collapse of higher-order solitons by tailoring unconventional optical diffraction and nonlinearities.COMMUNICATIONS PHYSICS,3(1).
MLA Zeng, Liangwei,et al."Preventing critical collapse of higher-order solitons by tailoring unconventional optical diffraction and nonlinearities".COMMUNICATIONS PHYSICS 3.1(2020).
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