One-dimensional gap solitons in quintic and cubic-quintic fractional nonlinear Schrodinger equations with a periodically modulated linear potential | |
Zeng, Liangwei1,2; Zeng, Jianhua1,2 | |
作者部门 | 瞬态光学研究室 |
2019-10 | |
发表期刊 | NONLINEAR DYNAMICS |
ISSN | 0924-090X;1573-269X |
卷号 | 98期号:2页码:985-995 |
产权排序 | 1 |
摘要 | Competing nonlinearities, such as the cubic (Kerr) and quintic nonlinear terms whose strengths are of opposite signs (the coefficients in front of the nonlinearities), exist in various physical media (in particular, in optical and matter-wave media). A benign competition between self-focusing cubic and self-defocusing quintic nonlinear nonlinearities (known as cubic-quintic model) plays an important role in creating and stabilizing the self-trapping of D-dimensional localized structures, in the contexts of standard nonlinear Schrodinger equation. We incorporate an external periodic potential (linear lattice) into this model and extend it to the space-fractional scenario that begins to surface in very recent years-the nonlinear fractional Schrodinger equation (NLFSE), therefore obtaining the cubic-quintic or the purely quintic NLFSE, and investigate the propagation and stability properties of self-trapped modes therein. Two types of one-dimensional localized gap modes are found, including the fundamental and dipole-mode gap solitons. Employing the techniques based on the linear-stability analysis and direct numerical simulations, we get the stability regions of all the localized modes; and particularly, the anti-Vakhitov-Kolokolov criterion applies for the stable portions of soliton families generated in the frameworks of quintic-only nonlinearity and competing cubic-quintic nonlinear terms. |
关键词 | Fractional calculus Cubic-quintic nonlinearity Nonlinear Schrodinger equation Gap solitons |
DOI | 10.1007/s11071-019-05240-x |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000496808000009 |
出版者 | SPRINGER |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/31961 |
专题 | 瞬态光学研究室 |
作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R Chin 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Zeng, Liangwei,Zeng, Jianhua. One-dimensional gap solitons in quintic and cubic-quintic fractional nonlinear Schrodinger equations with a periodically modulated linear potential[J]. NONLINEAR DYNAMICS,2019,98(2):985-995. |
APA | Zeng, Liangwei,&Zeng, Jianhua.(2019).One-dimensional gap solitons in quintic and cubic-quintic fractional nonlinear Schrodinger equations with a periodically modulated linear potential.NONLINEAR DYNAMICS,98(2),985-995. |
MLA | Zeng, Liangwei,et al."One-dimensional gap solitons in quintic and cubic-quintic fractional nonlinear Schrodinger equations with a periodically modulated linear potential".NONLINEAR DYNAMICS 98.2(2019):985-995. |
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