Solitons in composite linear-nonlinear moiré lattices.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2024-12-15 DOI:10.1364/OL.546501

Liangwei Zeng, Boris A Malomed, Dumitru Mihalache, Jingzhen Li, Xing Zhu

引用次数: 0

Abstract

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.

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复合线性-非线性摩尔纹格中的孤子。

我们产生了由线性和非线性子晶格组成的莫伊里晶格（ML）维持的二维间隙孤子（GS）族，非线性的失焦符号。根据子晶格之间的角度，ML 可能是准周期性的，也可能是周期性的，分别由互不相称或相称的子晶格组成（在后一种情况下，晶格间的角度对应于毕达哥拉斯三定理）。GS 包括基极、四极和八极孤子，以及携带单位涡度的四极和八极。通过小扰动线性化方程确定了 GS 系列的稳定段，并通过直接模拟扰动演化加以证实。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.