Surface defect gap solitons in one-dimensional dual-frequency lattices and simple lattices
Surface defect gap solitons in one-dimensional dual-frequency lattices and simple lattices
复制标题
DOI：
10.1364/josab.28.002070
复制
发表时间：
2011-09
影响因子：
1.9
通讯作者：
Li-Xian Zheng;Xing Zhu;Huagang Li;Yingji He
中科院分区：
文献类型：
--
作者：
Li-Xian Zheng;Xing Zhu;Huagang Li;Yingji He
本文研究了饱和非线性介质中一维半无限双频晶格和半无限简单晶格中表面缺陷带隙孤子的存在性和稳定性。通过改变缺陷强度，可以在不同的间隙中产生缺陷孤子。对于正缺陷，孤子只存在于半无限隙中，并且在低功率区是稳定的。随着负缺陷深度的增加，在半无限长带隙、第一带隙和第二带隙中都会出现缺陷孤子。
We report the existence and stability of surface defect gap solitons in one-dimensional semi-infinite dual-frequency lattices and semi-infinite simple lattices with a defect between them in the saturable nonlinear medium. By changing the defect intensity, defect solitons can exist in different gaps. For a positive defect, solitons only exist in the semi-infinite gap and can be stable in the low power region. With an increase of the negative defect depth, defect solitons will exist in the semi-infinite gap, first gap, and the second gap.