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	Flat-Bottom Dark Gap Modes as a New Localized State Supported by Periodic Nanostructures
	Li, Jiawei1,2,3; Zhang, Yanpeng2; Zeng, Jianhua1,3
英文摘要	We introduce the conception of flat-bottom dark gap modes in one-dimensional periodic nanostructures configured as periodic alternations (nanoscale stripes) of the local linear and nonlinear properties, resembling the Kronig-Penney model with combined nanoscopic linear-nonlinear lattices. We argue that, the flat-bottom gap modes, representing a new type of localized dark state in forbidden bandgap, can be implemented in BoseEinstein condensates and optics with periodic potentials like optical lattices and photonic crystals at nanoscale, with the existing experimental technologies. In addition, the fundamental localized dark gap modes and their higher-order ones, dark gap solitons and soliton clusters, are also predicted. Dynamics and stability of all the localized gap modes are scrutinized in two ways, linear-stability analysis and direct perturbed simulations. Our results open a new route to studying soliton physics in the context of periodic nanostructures where new localized states like flat-bottom dark gap solitons may exist. © 2022, The Authors. All rights reserved.
	2022-07-12
产权排序	1
语种	英语
内容类型	预印本
源URL	[http://ir.opt.ac.cn/handle/181661/96065]
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
作者单位	1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi’an Jiaotong University, Xi’an; 710049, China; 3.State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China;
推荐引用方式 GB/T 7714	Li, Jiawei,Zhang, Yanpeng,Zeng, Jianhua. Flat-Bottom Dark Gap Modes as a New Localized State Supported by Periodic Nanostructures. 2022.

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